U.S. public vehicle records

2020 Chevrolet BLAZER problems and owner complaints

Explore the records behind recurring owner reports.

Key facts

219 owner complaints analyzed

3 distinct recall campaigns

49,500 mi median reported failure mileage

Scope: 2020 model year. Data updated: 2026-10-01 (October 1, 2026). 32 complaints include usable failure mileage. View data status.

Owner-reported patterns

Most common problems

Electrical System is the most frequently named component, appearing in 76 of 219 complaints (34.7%). A complaint can name multiple components.

Recurring terms in complaint narratives
Topic	Matching reports	Share of complaints
Steering behavior	80	36.5%
Transmission and shifting	43	19.6%
Electrical and battery issues	28	12.8%
Braking behavior	13	5.9%
Engine operation	6	2.7%
Fuel system concerns	1	0.5%

Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.

Component breakdown

Number of unique complaints naming each component. Top eight shown.

Electrical System

Power Train

Engine

Unknown Or Other

Steering

Service Brakes

Fuel/Propulsion System

Suspension

Electrical System: 76; Power Train: 72; Engine: 68; Unknown Or Other: 57; Steering: 41; Service Brakes: 10; Fuel/Propulsion System: 4; Suspension: 4

Reported problems by failure mileage

Complaint counts in mileage bands. These are not failure rates per vehicle or mile.

Under 25,000

25,000 to 49,999

50,000 to 74,999

75,000 to 99,999

100,000 to 149,999

150,000 and above

Under 25,000: 12; 25,000 to 49,999: 4; 50,000 to 74,999: 8; 75,000 to 99,999: 5; 100,000 to 149,999: 2; 150,000 and above: 1

Under 25,000 miles has the most reports with usable mileage (12). 187 complaints have missing, zero or invalid mileage.

Complaints over time

Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.

2020

2021

2022

2023

2024

2025

2026

2020: 2; 2021: 7; 2022: 9; 2023: 13; 2024: 52; 2025: 84; 2026: 52

Pattern summary

Electrical System leads the component reports. Steering behavior appears in 80 complaint narratives. Transmission and shifting appears in 43 complaint narratives. Electrical and battery issues appears in 28 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.

Calculated from recorded counts. An AI narrative has not been published for this selection.

Complaint evidence

Examples provide context, not a representative sample or a verified diagnosis.

Owner report 11405615 · 2021-03-30 (March 30, 2021)

IN 2 OCCASIONS MY VEHICLE CAME TO A COMPLETE STOP AND TURNED OFF ON ME. I WAS THINKING IT WAS A SAFETY FEATURE BUT AFTER THE 2ND TIME I WAS CONCERNED. TOOK IT TO DEALERSHIP AND THEY FOUND NOTHING WRONG WITH IT. ON ANOTHER OCCASION I WAS LEAVING MY HOUSE WHEN MY STEERING WHEEL GOT SUPER HARD AND MADE IT VERY DIFFICULT FOR ME TO TURN THE WHEEL. TOOK IT TO DEALERSHIP AND THEY FOUND NOTHING WRONG, ACCORDING TO THEM TRUCK WAS PERFECTLY FINE.

Owner-reported narrative. 6,000 miles reported. Look up ODI 11405615 at NHTSA ↗

Owner report 11490610 · 2022-10-24 (October 24, 2022)

My vehicle idiot lights were flashing and the car felt as if it was going to stall on the road. Dealer said it was a faulty P6. Now when driving the car the entertainment unit locked up. Radio could not be changed, volume lowered. Pedals on steering column don't work. Even when car was shut off the radio still played and would cut off. Called my dealership. The earliest my Chevy dealer can look at it is next week.

Owner-reported narrative. Look up ODI 11490610 at NHTSA ↗

Owner report 11343879 · 2020-08-07 (August 7, 2020)

WITH APPROXIMATELY 1500 MILES ON THE VEHICLE, THE BLAZER'S AUTOMATIC TRANSMISSION FAILED WHILE DRIVING. I WAS STOPPED AT A RED LIGHT. WHEN THE LIGHT TURNED GREEN, I PROCEEDED SLOWLY THROUGH THE INTERSECTION IN A LEFT TURN. AS SOON AS I LEFT THE INTERSECTION, JUST AS THE VEHICLE WOULD TYPICALLY UP-SHIFT, THE RPM SPIKED, THE VEHICLE JOLTED FORWARD, AND THE CHECK ENGINE LIGHT CAME ON. AFTER THE INITIAL JOLT, THE VEHICLE WOULD NOT SHIFT OUT OF FIRST GEAR. I FOUND A SAFE PLACE TO PARK AND STOPPED THE ENGINE. UPON RESTARTING, THE ENGINE LIGHT REMAINE…

Owner-reported narrative. 1,500 miles reported. Look up ODI 11343879 at NHTSA ↗

Owner report 11470265 · 2022-06-21 (June 21, 2022)

The contact owns a 2020 Chevrolet Blazer. The contact stated that after driving into the garage, the engine was turned off but the transmission was left in the drive position. The contact mentioned that the brake was intended to engage in order for the vehicle not to move forward or backward. After exiting the vehicle moments later the vehicle began to roll backward out of the garage. The contact immediately attempted to stop the vehicle from rolling into the neighbor's home by grabbing the driver's side mirror. The contact was able to prevent …

Owner-reported narrative. 4,400 miles reported. Look up ODI 11470265 at NHTSA ↗

Owner report 11405620 · 2021-03-30 (March 30, 2021)

TL* THE CONTACT OWNS A 2020 CHEVROLET BLAZER. THE CONTACT STATED WHILE DRIVING 20 MPH, THE VEHICLE STARTED OVERHEATING. THE CONTACT THEN DROVE THE VEHICLE TO THE SIDE OF THE ROAD AND NOTICED THAT THE VEHICLE WAS LEAKING OIL. THE VEHICLE WAS THEN TOWED TO AN UNKNOWN DEALER. THE CONTACT STATED THAT SEVERAL UNKNOWN WARNING LIGHTS WERE ILLUMINATED. THE VEHICLE WAS TAKEN TO CHEVROLET OF COLUMBUS (2825 MERCHANT MILE, COLUMBUS, IN 47201) WHERE IT WAS DIAGNOSED WITH RODENT DAMAGE TO THE WIRING HARNESS. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAD…

Owner-reported narrative. 300 miles reported. Look up ODI 11405620 at NHTSA ↗

Owner report 11514633 · 2023-03-30 (March 30, 2023)

My 2020 Chevy Blazer began demonstrating possible problems with the transmission in November 2021 which have continued to date. The RPMs will rapidly increase and the car will feel as if it is jolting forward. If driving below 20 mphs, when I try to accelerate to a higher speed, the car will drag and then skip forward. I have videos showing this and have taken it to the dealership on two occasions but it couldn't be replicated and no codes show during diagnositics. The car is currently being repaired (at the dealership since 3/18/22) due …

Owner-reported narrative. Look up ODI 11514633 at NHTSA ↗

Owner report 11453468 · 2022-02-22 (February 22, 2022)

The service advisor at the Chevrolet dealership denied a repair to my abs control module because it was a “known issue”. He told my wife and I our car is unsafe to drive And still wants to give it back to us. Other Gm vehicles have recalls open for the same issue one needs to be open for this. Abs lights and multiple others no brakes or random braking.

Owner-reported narrative. Look up ODI 11453468 at NHTSA ↗

Owner report 11659014 · 2025-05-05 (May 5, 2025)

What component or system failed or malfunctioned, and is it available for inspection upon request? Multiple components in the engine timing and transmission system have failed. These include: Camshaft actuator solenoid valve failed twice (at ~30,000 and ~60,000 miles), each time with different DTC codes. Camshaft positioning sensor failed, triggering P0024 (“timing advanced and bouncing around”). Timing chain tensioner spring failed, requiring re-timing. Camshaft carrier case gasket experienced a major oil leak at 59,000 miles. Thermostat …

Owner-reported narrative. Look up ODI 11659014 at NHTSA ↗

Owner report 11559855 · 2023-12-13 (December 13, 2023)

The contact owns a 2020 Chevrolet Blazer. The contact stated that while refueling the vehicle, the contact removed the pump handle from the filler neck, and one of the fuel flappers detached. The contact was concerned about fuel leaking from the fuel tank. The vehicle was taken to the dealer, where it was diagnosed that the filler neck and fuel filler housing needed to be replaced; however, the fuel filler housing was on backorder. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approxim…

Owner-reported narrative. 29,800 miles reported. Look up ODI 11559855 at NHTSA ↗

Explore the data

Vehicle analysis explorer

Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.

Data completeness

219 unique complaints in this selection. Analysis snapshot: 2026-10-01.

14.6%Usable mileage32 / 219 records

100.0%Valid incident date219 / 219 records

100.0%Valid filing date219 / 219 records

100.0%Ordered incident and filing dates219 / 219 records

Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.

Problems by model year

Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.

From model yearThrough model year

Component complaint heatmap
Component	2019	2020	2021	2022	2023	2024	2025	2026
Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.
Electrical System	5931.7% ODI 11253880 2019 CHEVROLET BLAZER. CONSUMER WRITES IN REGARDS TO DEFECTIVE BODY CONTROL MODULE. LD THE CONSUMER STATED THE VEHICLE WAS REPAIRED TWICE AT THE DEALER, BUT THE FAILURE RECURRED. JS Look up ODI 11253880 at NHTSA ↗	7634.7% ODI 11389965 · 3 mi TWICE WHILE I HAVE BEEN DRIVING THE INSTRUMENT PANEL WENT BLANK. IN MOTION. Look up ODI 11389965 at NHTSA ↗	3727.6% ODI 11403124 · 2,700 mi WHILE DRIVING THE THE WHOLE DASH GOES BLANK FOR A FEW SECOND, THEN THEN IT REBOOTS AND EVENTUALLY MOST OF IT COMES BACK. HOWEVER, IT DID THIS REPEAT THIS CYCLE AND CANNOT TELL IF MY SIGNALS ARE WORKING OR WHAT MY SPEED IS. I HAVE A VIDEO OF IT HAPPENING. THE CAR HAS 2,700 MILES.. I AM TAKING TO A DEALERSHIP Look up ODI 11403124 at NHTSA ↗	1632.0% ODI 11466209 We were sold a new vehicle with known computer problems. The dealership knew of the defects but sold it to us anyway. They consider it a warranty issue. Chevrolet doesn’t seem to care. Look up ODI 11466209 at NHTSA ↗	614.0% ODI 11687082 Thermostat not working. Causing fan to run as if the vehicle is overheating Look up ODI 11687082 at NHTSA ↗	714.9% ODI 11563559 We Leased this 2024 Chevy Blazer On December 18th, 2023, at Serra Chevrolet in Southfield Michigan 1. On [XXX] The Digital Speed Disappeared. The Steering Resistance Warning Came on. And The ECS Warning Came on. As Well as The Parking Break Service Lights and The Check Engine Light. ***The Steering Wheel Starting Locking, The Brakes Were Hard to Press.( It got Better 2. The Next Day [XXX] All of The Code Lights Came Back on, But Now The Shift Gear Wo0uld Not Work, Could Not Reverse or Move Forward. We Called Our Service Manager Scott. We were… Look up ODI 11563559 at NHTSA ↗	825.0% ODI 11692015 The infotainment system of a brand new 2025 Blazer EV is doing blackouts, flickers, and changing commands and requests. While this may sound trivial - and if this system just did the radio - I would agree. However it controls most all the sub-systems of the car from Charging, to Display, to GPS, Environmental, etc. While at home it is just annoying and frustrating - we traveled to VA from FL this past week. Traffic was horrendous due to a closure of I95 in SC - ALL traffic was forced onto 2 lane country roads. Attempting to use the Control… Look up ODI 11692015 at NHTSA ↗	00.0% No examples available for this selection.
Power Train:Automatic Transmission	00.0% No examples available for this selection.	10.5% ODI 11634709 · 128,000 mi The contact owns a 2020 Chevrolet Blazer. The contact stated that upon reaching the destination and shifting the vehicle into park, a warning message displayed reading "Please shift to Park." After, the contact observed that he was unable to switch the vehicle off. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was 128,000. Look up ODI 11634709 at NHTSA ↗	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.
Visibility:Windshield Wiper/Washer	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.
Visibility:Windshield Wiper/Washer:Motor	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.
Unknown Or Other	5429.0% ODI 11309719 · 10,332 mi I BOUGHT THE BLAZER IN MAY 2019, FIRST 4 MONTHS WAS FINE. STARTING OCT. 8, WHILE DRIVING THE CAR. I HAD TO TURN OFF ONE HIGHWAY ONTO ANOTHER. I HIT RESUME ON THE ADAPTIVE CRUISE CONTROL AND IT WOULD NOT RESUME. DISPLAYED "ADAPTIVE CRUISE CONTROL TEMPORARILY UNAVAILABLE ". I TRIED SEVERAL TIMES. GOT HOME PARKED. WHEN I LEFT FOR WORK, HOURS LATER. IT WORKED FINE. ON OCT. 10, 18, NOV. 21 WHILE DRIVING- THE CAR WOULD BEEP 3 TIMES AND THE ADAPTIVE CRUISE CONTROL WOULD SHUT OFF. TOOK IT TO DEALER ON 11/7 FOR THIS PROBLEM. ON 12/27 THEY REPLAYED A… Look up ODI 11309719 at NHTSA ↗	5726.0% ODI 11469094 My retractable sunroof suddenly explosively broke. I was approaching a red stop light at low speed. I heard what I thought was a gunshot or vehicle backfiring. As I drove on, I heard wind whistling. I thought my passenger side window wasn’t closed. I lowered then jraised it. At that point, I heard my sunroof disintegrate. Luckily, the headliner kept the glass from raining down on me. If this had happened at highway speed, it could’ve been a real problem. Look up ODI 11469094 at NHTSA ↗	2014.9% ODI 11435846 When I am accelerating it seems like my car hesitates to get up to speed, at times feels like it is slipping to get traction. I put my car in AWD and didn't seem to notice the issue, when put back into 2WD, the issue happens, it is not an every time thing, but enough that my husband, who doesn't drive my car a lot noticed it and a coworker who has the same year as mine also has the issue. Of course when I took it into the dealership to have it looked at the car didn't do it, so as far as they are concerned there is nothing wrong with it, whic… Look up ODI 11435846 at NHTSA ↗	918.0% ODI 11493189 Stick on After market steering wheel emblem (Chevrolet) became dislodged when air bag deployed during accident, hit my daughter in chest then richoched off then stuck into driver side door panel approximately 1/2 inch (like shrapnel) very lucky this emblem did not penetrate her body as it could have been fatal. Look up ODI 11493189 at NHTSA ↗	37.0% ODI 11622967 While my wife was pulling into park the car and pressing the brake, the car all of a sudden accelerated into the building. Pressing the brake failed to stop the car. No person was in the way of the car so no one other than my wife was at risk of injury. The problem has not been reproduced since the car was totaled. The car was inspected by the insurance for loss but that was it. Police and manufacturer have not inspected the car. No warnings were presented prior to the accident. Look up ODI 11622967 at NHTSA ↗	817.0% ODI 11696006 Transmission & engine failure. Press the gas and it doesn’t move the car-feels as if it is trying to change gears and it isn’t working. Car under warranty & still not working. Been to the dealership multiple times and they are unable to fix the issue. No warning signs. Look up ODI 11696006 at NHTSA ↗	1031.3% ODI 11655111 1).Engine stopped on Interstate hiway with just 2024 miles. Towed to Chevy dealer. New engine installed. Upon return of car emission system failure. 2) Car delivered with defective windshield with major (crackle) throughout very distracting at sunrise/sunset. Replacement not much better. Look up ODI 11655111 at NHTSA ↗	00.0% No examples available for this selection.
Engine And Engine Cooling:Engine:Gasoline	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.
Power Train	6032.3% ODI 11361859 · 14,000 mi TL* THE CONTACT OWNS A 2019 CHEVROLET BLAZER. THE CONTACT STATED THAT WHILE ATTEMPTING TO MOVE OFF FROM A TRAFFIC LIGHT, THE VEHICLE FAILED TO ACCELERATE. THE CONTACT STATED THAT SHE DEPRESSED THE ACCELERATOR PEDAL THREE TIMES BEFORE THE VEHICLE RESPONDED. ADDITIONALLY, WHILE APPROACHING THE NEXT STOP LIGHT, THE BRAKE PEDAL WAS DEPRESSED BUT FAILED TO ADEQUATELY SLOW THE VEHICLE. THE CONTACT STATED THAT THE BRAKING DISTANCE WAS EXTENDED. THE CONTACT PUMPED THE BRAKE PEDAL SEVERAL TIMES TO STOP THE VEHICLE BUT NOT BEFORE THE VEHICLE WENT THROUGH… Look up ODI 11361859 at NHTSA ↗	7232.9% ODI 11343879 · 1,500 mi WITH APPROXIMATELY 1500 MILES ON THE VEHICLE, THE BLAZER'S AUTOMATIC TRANSMISSION FAILED WHILE DRIVING. I WAS STOPPED AT A RED LIGHT. WHEN THE LIGHT TURNED GREEN, I PROCEEDED SLOWLY THROUGH THE INTERSECTION IN A LEFT TURN. AS SOON AS I LEFT THE INTERSECTION, JUST AS THE VEHICLE WOULD TYPICALLY UP-SHIFT, THE RPM SPIKED, THE VEHICLE JOLTED FORWARD, AND THE CHECK ENGINE LIGHT CAME ON. AFTER THE INITIAL JOLT, THE VEHICLE WOULD NOT SHIFT OUT OF FIRST GEAR. I FOUND A SAFE PLACE TO PARK AND STOPPED THE ENGINE. UPON RESTARTING, THE ENGINE LIGHT REMAINE… Look up ODI 11343879 at NHTSA ↗	1813.4% ODI 11495782 · 28,000 mi The contact owns a 2021 Chevrolet Blazer. The contact stated that while driving approximately 10 MPH and attempting to make a left turn, the vehicle stalled. The contact depressed the accelerator pedal aggressively several times to get the vehicle to start moving again. The failure reoccurred while the contact’s daughter was driving and attempting to make a left turn at a green light when the vehicle stalled. The contact stated that the failure persisted while driving and attempting to turn to the left. The failure occurred intermittently. The … Look up ODI 11495782 at NHTSA ↗	1122.0% ODI 11586006 My transmission started slipping really badly. Had never happened before, and then suddenly wouldn’t shift above 3rd gear. My reverse gear stopped working. I had to have my valve body replaced which fixed the drive gears but the reverse still didn’t work. After months without my car, my dealership had to replace the transmission. Look up ODI 11586006 at NHTSA ↗	1023.3% ODI 11528283 The contact owns a 2023 Chevrolet Blazer. The contact received notification of the NHTSA Campaign Number: 23V172000 (Power Train) however, the part to do the recall repair was not yet available. An undisclosed dealer was contacted and confirmed that the parts were not yet available for the recall repair. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available. Look up ODI 11528283 at NHTSA ↗	817.0% ODI 11583806 Vehicle has only 1650 miles on it. It is driven conservatively especially so during the first 1000 miles of use “break in period”. Was leaving our neighborhood and the vehicle was searching for a gear, revving and jerking. Check Engine light came on. Limped the vehicle slowly back home and contacted dealer. Had vehicle towed to dealer and they diagnosed the issue as a faulty valve body. Part is on national backorder. Look up ODI 11583806 at NHTSA ↗	00.0% No examples available for this selection.	00.0% No examples available for this selection.

Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.

Failure mileage by component

Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.

Component failure mileage distribution
Component	Mileage range (25th–75th percentile)	Median	Usable records	Examples
Electrical System	8,665–65,000 mi	38,000 mi	9	ODI 11389965 · 3 mi TWICE WHILE I HAVE BEEN DRIVING THE INSTRUMENT PANEL WENT BLANK. IN MOTION. Look up ODI 11389965 at NHTSA ↗ ODI 11404794 · 10,500 mi AFTER DRIVING THE VEHICLE FOR RANDOM PERIODS OF TIME AND AT RANDOM SPEEDS, ALL THE TPMS SENSORS WILL GIVE ALARMS AND THEN REGISTER AS DASHES ON THE DASHBOARD. IT GIVES ALARMS FOR EACH TIRE AS EACH TIRE GOES OUT UNTIL ALL OF THEM GO OUT. THEY WILL RESET AFTER A RANDOM PERIOD OF TIME AND START TO SHOW THE PRESSURE AGAIN. Look up ODI 11404794 at NHTSA ↗ ODI 11405620 · 300 mi TL* THE CONTACT OWNS A 2020 CHEVROLET BLAZER. THE CONTACT STATED WHILE DRIVING 20 MPH, THE VEHICLE STARTED OVERHEATING. THE CONTACT THEN DROVE THE VEHICLE TO THE SIDE OF THE ROAD AND NOTICED THAT THE VEHICLE WAS LEAKING OIL. THE VEHICLE WAS THEN TOWED TO AN UNKNOWN DEALER. THE CONTACT STATED THAT SEVERAL UNKNOWN WARNING LIGHTS WERE ILLUMINATED. THE VEHICLE WAS TAKEN TO CHEVROLET OF COLUMBUS (2825 MERCHANT MILE, COLUMBUS, IN 47201) WHERE IT WAS DIAGNOSED WITH RODENT DAMAGE TO THE WIRING HARNESS. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAD… Look up ODI 11405620 at NHTSA ↗
Power Train	29,250–67,500 mi	50,000 mi	15	ODI 11343879 · 1,500 mi WITH APPROXIMATELY 1500 MILES ON THE VEHICLE, THE BLAZER'S AUTOMATIC TRANSMISSION FAILED WHILE DRIVING. I WAS STOPPED AT A RED LIGHT. WHEN THE LIGHT TURNED GREEN, I PROCEEDED SLOWLY THROUGH THE INTERSECTION IN A LEFT TURN. AS SOON AS I LEFT THE INTERSECTION, JUST AS THE VEHICLE WOULD TYPICALLY UP-SHIFT, THE RPM SPIKED, THE VEHICLE JOLTED FORWARD, AND THE CHECK ENGINE LIGHT CAME ON. AFTER THE INITIAL JOLT, THE VEHICLE WOULD NOT SHIFT OUT OF FIRST GEAR. I FOUND A SAFE PLACE TO PARK AND STOPPED THE ENGINE. UPON RESTARTING, THE ENGINE LIGHT REMAINE… Look up ODI 11343879 at NHTSA ↗ ODI 11470265 · 4,400 mi The contact owns a 2020 Chevrolet Blazer. The contact stated that after driving into the garage, the engine was turned off but the transmission was left in the drive position. The contact mentioned that the brake was intended to engage in order for the vehicle not to move forward or backward. After exiting the vehicle moments later the vehicle began to roll backward out of the garage. The contact immediately attempted to stop the vehicle from rolling into the neighbor's home by grabbing the driver's side mirror. The contact was able to prevent … Look up ODI 11470265 at NHTSA ↗ ODI 11550369 · 65,000 mi The contact owns a 2020 Chevrolet Blazer. The contact stated that while the vehicle was shifted into reverse, the vehicle failed to respond as intended. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 65,000. Look up ODI 11550369 at NHTSA ↗
Engine	6,000–70,000 mi	15,000 mi	5	ODI 11405615 · 6,000 mi IN 2 OCCASIONS MY VEHICLE CAME TO A COMPLETE STOP AND TURNED OFF ON ME. I WAS THINKING IT WAS A SAFETY FEATURE BUT AFTER THE 2ND TIME I WAS CONCERNED. TOOK IT TO DEALERSHIP AND THEY FOUND NOTHING WRONG WITH IT. ON ANOTHER OCCASION I WAS LEAVING MY HOUSE WHEN MY STEERING WHEEL GOT SUPER HARD AND MADE IT VERY DIFFICULT FOR ME TO TURN THE WHEEL. TOOK IT TO DEALERSHIP AND THEY FOUND NOTHING WRONG, ACCORDING TO THEM TRUCK WAS PERFECTLY FINE. Look up ODI 11405615 at NHTSA ↗ ODI 11405620 · 300 mi TL* THE CONTACT OWNS A 2020 CHEVROLET BLAZER. THE CONTACT STATED WHILE DRIVING 20 MPH, THE VEHICLE STARTED OVERHEATING. THE CONTACT THEN DROVE THE VEHICLE TO THE SIDE OF THE ROAD AND NOTICED THAT THE VEHICLE WAS LEAKING OIL. THE VEHICLE WAS THEN TOWED TO AN UNKNOWN DEALER. THE CONTACT STATED THAT SEVERAL UNKNOWN WARNING LIGHTS WERE ILLUMINATED. THE VEHICLE WAS TAKEN TO CHEVROLET OF COLUMBUS (2825 MERCHANT MILE, COLUMBUS, IN 47201) WHERE IT WAS DIAGNOSED WITH RODENT DAMAGE TO THE WIRING HARNESS. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAD… Look up ODI 11405620 at NHTSA ↗ ODI 11428872 · 15,000 mi The contact owns a 2020 Chevrolet Blazer. The contact stated while driving approximately 30 mph, there was an abnormal noise coming from the vehicle. In addition, the check engine warning light was illuminated, and the vehicle failed to operate. The vehicle was towed to the dealer but was not yet diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 15,000. Look up ODI 11428872 at NHTSA ↗
Steering	6,000–50,000 mi	8,665 mi	5	ODI 11405615 · 6,000 mi IN 2 OCCASIONS MY VEHICLE CAME TO A COMPLETE STOP AND TURNED OFF ON ME. I WAS THINKING IT WAS A SAFETY FEATURE BUT AFTER THE 2ND TIME I WAS CONCERNED. TOOK IT TO DEALERSHIP AND THEY FOUND NOTHING WRONG WITH IT. ON ANOTHER OCCASION I WAS LEAVING MY HOUSE WHEN MY STEERING WHEEL GOT SUPER HARD AND MADE IT VERY DIFFICULT FOR ME TO TURN THE WHEEL. TOOK IT TO DEALERSHIP AND THEY FOUND NOTHING WRONG, ACCORDING TO THEM TRUCK WAS PERFECTLY FINE. Look up ODI 11405615 at NHTSA ↗ ODI 11414919 · 8,665 mi REARVIEW CAMERA AND BACK UP CAMERA CONSTANTLY NOT FUNCTIONING AND GOING BLACK WHILE AND MOTION OR BACKING UP. CAR ACTS LIKE THERE IS SOMETHING IN FRONT OF IT (LIKE A WALL) ON CERTAIN ROADS AND DOES NOT WANT TO ACCELERATE TO TURN/PULL OUT FROM A STOPPED POSITION. I HAVE HAD THIS VEHICLE FOR 2 MONTHS. I HAVE HAD A CAR PRIOR TO THIS THAT DID THIS BEFORE AND STOPPED AND LEFT ME STRANDED ON A BUSY ROAD AND CAUSED AN ACCIDENT. I CAN'T BELIEVE THIS CAR IS ACTING LIKE THIS! Look up ODI 11414919 at NHTSA ↗ ODI 11517917 · 1,000 mi The contact owns a 2020 Chevrolet Blazer. The contact stated that while driving at various highways speeds, the vehicle was very unstable to steer and was swaying from side to side. The vehicle was taken to the local dealer who was unable to identify a failure. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 1,000. Look up ODI 11517917 at NHTSA ↗
Service Brakes	Too few reports for a range	4,983 mi	2 (sparse)	ODI 11373091 · 1,300 mi I WAS DRIVING ABOUT 35MPH GOING STRAIGHT WHEN MY CHEVY BLAZER ACTED AS IF IT 'HIT A BRICK WALL' AND CAME TO A COMPLETE STOP. I GOT OUT AND NOTICED MY RIGHT, FRONT WHEEL WAS COMPLETELY SMASHED INTO MY CAR. SOMETHING HAD COME LOOSE INTERNALLY AND LOCKED UP MY WHEEL. IT DAMAGED MY CAR SO BAD WHERE MY SUSPENSION WAS DAMAGED. IT HAD TO BE TOWED. IT WAS NON DRIVABLE. MY VEHICLE ONLY HAD 1300 MILES ON IT. I DECIDED AT LAST MINUTE TO NOT GET ON HIGHWAY. Look up ODI 11373091 at NHTSA ↗ ODI 11414919 · 8,665 mi REARVIEW CAMERA AND BACK UP CAMERA CONSTANTLY NOT FUNCTIONING AND GOING BLACK WHILE AND MOTION OR BACKING UP. CAR ACTS LIKE THERE IS SOMETHING IN FRONT OF IT (LIKE A WALL) ON CERTAIN ROADS AND DOES NOT WANT TO ACCELERATE TO TURN/PULL OUT FROM A STOPPED POSITION. I HAVE HAD THIS VEHICLE FOR 2 MONTHS. I HAVE HAD A CAR PRIOR TO THIS THAT DID THIS BEFORE AND STOPPED AND LEFT ME STRANDED ON A BUSY ROAD AND CAUSED AN ACCIDENT. I CAN'T BELIEVE THIS CAR IS ACTING LIKE THIS! Look up ODI 11414919 at NHTSA ↗
Suspension	Too few reports for a range	1,300 mi	1 (sparse)	ODI 11373091 · 1,300 mi I WAS DRIVING ABOUT 35MPH GOING STRAIGHT WHEN MY CHEVY BLAZER ACTED AS IF IT 'HIT A BRICK WALL' AND CAME TO A COMPLETE STOP. I GOT OUT AND NOTICED MY RIGHT, FRONT WHEEL WAS COMPLETELY SMASHED INTO MY CAR. SOMETHING HAD COME LOOSE INTERNALLY AND LOCKED UP MY WHEEL. IT DAMAGED MY CAR SO BAD WHERE MY SUSPENSION WAS DAMAGED. IT HAD TO BE TOWED. IT WAS NON DRIVABLE. MY VEHICLE ONLY HAD 1300 MILES ON IT. I DECIDED AT LAST MINUTE TO NOT GET ON HIGHWAY. Look up ODI 11373091 at NHTSA ↗

Complaint and recall timeline

Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.

ComponentPeriod

Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.

Monthly counts, recall campaigns and complaint examples

Monthly complaint and recall timeline
Month	Complaints	Campaigns announced	Examples
2024-11	5	None	ODI 11623955 I am getting the message "Shift to Park" displayed while vehicle in park after turning the vehicle off. Looking online, it seems to be a common issue with Blazers as well as other GM vehicles. I found online that "the cause of the condition may be that the park switch in the transmission control (shifter) assembly is not pulling the BCM signal low to electronically show that the vehicle is in the Park position." If this is such a common issue on similar vehicle to mine since 2018 it appears, why is this not a Recall already?! Look up ODI 11623955 at NHTSA ↗ ODI 11625547 When putting the vehicle into park, we are receiving a “Shift to Park” error. This issue appears to be common among thousands of General Motors vehicles. However, the dealership is unable to assist us because the repair bulletin only applies to the 2019 model year and does not include the 2020 model year. Despite this, the issue we are experiencing is identical to the one reported for the 2019 model. Look up ODI 11625547 at NHTSA ↗ ODI 11625728 P0128 code- Assisted steering fault Check engine light Ac blowing cold Temp gauge flat lined Need to replace temp sensor and thermostat. Others with this issue have reported steering can completely lock up, which could cause serious accidents which could result in fatalities. Look up ODI 11625728 at NHTSA ↗
2024-12	4	None	ODI 11628126 Steering assist warning and engine check light are on. I had an scan done and was told it was the thermostat and coolant temperature sensor which seems to be a common problem. There are no safety concerns to my knowledge. I feel this problem needs to be addressed as repairs are very costly. Look up ODI 11628126 at NHTSA ↗ ODI 11628254 We have experienced 2 issues that are very well known issues, I will list them here. First, is the Shift to Park issue, that involves an electrical switch and wiring harness on the shifter assembly. Second, is regarding a "driver assist reduced drive with care" alert message that includes Diagnostic Trouble Code (DTC) P0128, but is actually related to either the engine cooling sensor or the cooling thermostat housing assembly. Both issues are very well known, and many owners have had these issues. Look up ODI 11628254 at NHTSA ↗ ODI 11629429 When I parked and tried to turn off car it would continue to run. I had to put it in park and drive back to park several times before car would turn off. There’s a recall for this issue on other blazers and I feel 2020 blazers should be included. The dealer replaced the shifter assembly, cleared OTC Look up ODI 11629429 at NHTSA ↗
2025-01	1	None	ODI 11634709 · 128,000 mi The contact owns a 2020 Chevrolet Blazer. The contact stated that upon reaching the destination and shifting the vehicle into park, a warning message displayed reading "Please shift to Park." After, the contact observed that he was unable to switch the vehicle off. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was 128,000. Look up ODI 11634709 at NHTSA ↗
2025-02	2	None	ODI 11642269 At around 55,000 miles my Blazer began to show error codes for “Steering Assist Reduced” and “ESC”. After 60,000 it began to intermittently populate the Check Engine Light paired with the "Steering Assist Reduced" message. Then, the engine fan would turn on high, auto-start when breaking would disable, and the steering would become more stiff. Finally, I was able to get a scan on the code and found out that it was my thermostat. After taking it to my local Chevy dealer I was quoted $1100 to repair. When I called my local mechanic I was told the… Look up ODI 11642269 at NHTSA ↗ ODI 11643912 “Shift to Park”message appears when I shift to park and turn car off. Look up ODI 11643912 at NHTSA ↗
2025-03	8	None	ODI 11646852 · 77,340 mi The contact owns a 2020 Chevrolet Blazer. The contact stated while attempting to shift to park, the engine remained running, and the message "Shift to Park" was displayed. A mechanic was called to diagnose the vehicle, and the contact was informed that the transmission control, shifter harness, inline shifter wiring harness jumper, park switch, and other related components were faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 77,340. Look up ODI 11646852 at NHTSA ↗ ODI 11647032 Continues "reduced steering assistance', thermostat won't register, stay on Cold, a/c blows warm air. We added coolant, replaced battery. Code goes off, within a few weeks comes back on. About to replace the whole thermostat and sensor. Many many blazers having the same issues. Look up ODI 11647032 at NHTSA ↗ ODI 11647514 On Saturday, March 8, 2025 I was crossing a busy intersection when my car shut off completely and accelerated into oncoming traffic almost causing a collision or fatality. My brakes locked and steering wheel locked. I had to put the emergency brake on in order for the car to come to a stop. We got out of the car in the middle of the street and ran for safety. Scariest experience I’ve ever been in especially with my family in the car!! Look up ODI 11647514 at NHTSA ↗
2025-04	8	None	ODI 11655309 At 41,024 the AC comoressor locked up. Took it to a repair shop. Then a year later the "steering assist light" came on. Took it to repair shop. Couldnt duplicate because it would start woring again. Had heat sensor replaced. That worked for a bit. Then it did it again. Replaced thermostate. That worked for a little bit. Then the Overheated light came on. Told me to shut the car down. (I had only drove 1/2 mile. Get out....nothing! No leaks coolant good. Had it towed to a shop And just had the thermostat changed again! Im not going to find out … Look up ODI 11655309 at NHTSA ↗ ODI 11655633 I have had to replace the radiator 3 times since I've owned this vehicle. I see where there are others with the same issue. Now I have to replace the thermostat my first radiator was replaced at 16k miles. This is a safety issue because my car over heated and broke down on the highway left me stranded Look up ODI 11655633 at NHTSA ↗ ODI 11655685 Engine fan stuck on high, air conditioner does not work, temperature gauge stuck on cold, driving assist warning light on. Look up ODI 11655685 at NHTSA ↗
2025-05	17	None	ODI 11658305 The thermostat has failed, causing hot air to blow into the car. This is a known and common issue with the 2020 Blazer. Look up ODI 11658305 at NHTSA ↗ ODI 11658799 Failure of either coolant temperature sensor or thermostat or both. The A/C is disabled, the temperature gauge does not function, and a message appears on the dash display regarding steering assist not working. With all these issues, it’s impossible to feel safe driving any distances, not knowing whether the vehicle will overheat and damage the engine or other components, or if the steering will actually fail. Both parts have been replaced, at the time, May 4, 2025. Look up ODI 11658799 at NHTSA ↗ ODI 11659014 What component or system failed or malfunctioned, and is it available for inspection upon request? Multiple components in the engine timing and transmission system have failed. These include: Camshaft actuator solenoid valve failed twice (at ~30,000 and ~60,000 miles), each time with different DTC codes. Camshaft positioning sensor failed, triggering P0024 (“timing advanced and bouncing around”). Timing chain tensioner spring failed, requiring re-timing. Camshaft carrier case gasket experienced a major oil leak at 59,000 miles. Thermostat … Look up ODI 11659014 at NHTSA ↗
2025-06	9	None	ODI 11664630 · 54,000 mi The contact owns a 2020 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed, the steering wheel became inoperable. The contact stated that the steering wheel became difficult to turn with a reduced steering message displayed. The vehicle was taken to the dealer, where it was diagnosed that the thermostat had failed, which caused the steering wheel to fail, and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 54,000. Look up ODI 11664630 at NHTSA ↗ ODI 11665308 The blazer's check engine light came on and I had it scanned. The code was PO128 indicating that the engine coolant temperature is consistently below the thermostat regulating temperature. We are also getting a message on the vehicle that states the steering assist is reduced, drive with care. The car is also blowing hot air when the AC is on, the temperature gauge is staying at the lowest setting and the fans are running full blast. This seems to be a very common problem with the Chevrolet Blazer. Look up ODI 11665308 at NHTSA ↗ ODI 11666687 A few months ago had Blazer in for oil change. That same day check engine light came on. Was told thermostat needed to be replaced. Needed to order part. Check engine light went out then steering maybe reduced just a week ago eventually check engine light came on. Took to dealership and thermostat needed to be replaced also radiator developed a leak. Just over 60000 miles Look up ODI 11666687 at NHTSA ↗
2025-07	2	None	ODI 11672407 I am experiencing the well known "shift to park message" while the shifter is in park. I cannot turn the vehicle off and I am worried the battery will die. This is a well documented issue with this vehicle, and several other models outlined in TSB 19-NA-206, for years and yet they refuse to issue a recall to repair the faulty design or component . I have reached out to them via email, but no action has been taken, see email below. ------------------------------------------------------------------------------------- GM Customer Care, I am writ… Look up ODI 11672407 at NHTSA ↗ ODI 11676527 I purchased this vehicle in March, 2025 from a used dealer. When I got it, I noticed the vehicle was leaking oil on my garage floor. I took it back to used dealer who also agreed there is a leak but couldn't detect it. They sent me to Chevy Dealer. It has been 3 months now and dealer states the transmission has a seal leak. It seems like a similar recall on same year and model, however my vehicle is not listed as a recall. Why isn't there one? Look up ODI 11676527 at NHTSA ↗
2025-08	4	None	ODI 11677780 Steering assist reduced warning is on all the time. Fan is on overdrive and thermostat needle on cool all the time. Leaking camshaft actuator solenoids Look up ODI 11677780 at NHTSA ↗ ODI 11679101 · 54,483 mi The contact owns a 2020 Chevrolet Blazer. The contact stated that while attempting to park the vehicle, the gear shifter was shifted into park. The message “Shift to Park” was displayed while attempting to restart the vehicle. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The approximate failure mileage was 54,843. Look up ODI 11679101 at NHTSA ↗ ODI 11681708 Shifter Assembly and Harness When putting vehicle into "Park" and then shutting off the vehicle a warning message would appear that the car had to be placed into park and a beeper would sound. Never sure if vehicle is actually in park. Have to restart the vehicle, move the parking gear from park, then back into park until message does not appear. This issue was a recall for the 2013-2019 Chevy Blazers, but was not recalled for the 2020 Blazer, although it appears that this is still an issue. Had issue repaired by paying for the replacement of… Look up ODI 11681708 at NHTSA ↗
2025-09	9	None	ODI 11684500 On multiple occasions, my 2020 Chevrolet Blazer RS has failed to recognize when it is shifted into the "Park" gear. When this occurs, a "Shift to Park" message appears on the dashboard, and the vehicle's electronics will not shut down, preventing me from turning off and locking the vehicle. This defect presents several critical safety hazards: Inability to Secure Vehicle: The engine/electronics remain active, preventing the vehicle from being turned off and secured. This could drain the battery, leaving me stranded, or make the vehicle a targ… Look up ODI 11684500 at NHTSA ↗ ODI 11685921 SHIFT TO Park WARNING COMES ON WHEN CAR IS IN PARK, car electrical will not shut off until the shifter is shaken or car is turned back on and shifted into gear and back to park, may take several times Look up ODI 11685921 at NHTSA ↗ ODI 11686239 Frequently when shutting off my Blazer, I will get an alert that the vehicle is not in park. I have to squeeze and jiggle the shifter in order to get the alert to go away. On several occasions, when I have turned the engine on and back off again without ever touch the gear shifter, I will get the same alert that the vehicle is not in park. If the issue is not just the sensor/switch, this could mean that the transmission could potentially fall out of park and the vehicle start to roll on its own with no one inside. Look up ODI 11686239 at NHTSA ↗
2025-10	15	None	ODI 11691268 Vehicle thermostat would read cold while operating and the AC was not working. A message would populate in the dash stating "steering assist is reduced drive with care." Multiple forums stated it was a thermostat issue or temperature sensor. Also attempted to disconnect the battery for several minutes which would in turn clear the message and all would be working fine. This has been done multiple times and is at random when the message and AC stop working Look up ODI 11691268 at NHTSA ↗ ODI 11691458 Similar to the Bulletin No.: PIP5681C The flex pipe bracket is cracked on my 2020 chevy blazer this causes rattling and whining noises due to the part rubbing against where it was previously connected. Look up ODI 11691458 at NHTSA ↗ ODI 11692227 Engine light on, power steering assist, air conditioning stop working diagnostic tool read p0128 coolant thermostat Look up ODI 11692227 at NHTSA ↗
2025-11	3	None	ODI 11696935 Accident going about 50 mph and no airbags deployed Look up ODI 11696935 at NHTSA ↗ ODI 11697619 Back up camera quit workingsometime ago.I took it to dealership.Fix did not last long.Out again. Look up ODI 11697619 at NHTSA ↗ ODI 11700067 Steering assist reduced message followed by check engine light came on and temperature gauge not moving from cold. Immediately took it to the dealership Hiley Chevrolet in Rockwall, TX. After $250 for diagnostic, failed thermostat is the cause and $1216 repair cost. Known issue that Chevrolet issued special coverage for 2021 Blazers, but none for 2020. My vehicle has a little more than 51,970 miles. Same vehicle just had battery replaced two weeks ago at same dealership and no other issues showed up during diagnostic then. Look up ODI 11700067 at NHTSA ↗
2025-12	6	None	ODI 11702406 · 80,000 mi The contact owns a 2020 Chevrolet Blazer. The contact stated that while attempting to start the vehicle, the brake pedal was depressed, but the pedal was firm, and the contact was unable to start the vehicle. The vehicle was towed to the dealer, where an unknown repair was performed. Additionally, the contact stated that upon taking the vehicle for an oil change, the contact was informed that the service could not be performed because the rear main seal was defective. The vehicle was taken to the dealer, where the contact was informed that the … Look up ODI 11702406 at NHTSA ↗ ODI 11704477 Thermostat/thermostat sensor and complete water outlet system replacement at only 52,377 miles. The defective part was located under the Intake Manifold requiring its removal, excessive labor cost for the repair, and potential future engine issues due to exposed/open head gasket for the repair. Look up ODI 11704477 at NHTSA ↗ ODI 11704538 · 157,236 mi The contact owns a 2020 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed, the vehicle hesitated with a grinding sound coming from the vehicle, with the check engine warning light illuminated. The contact stated that the vehicle was jerking while driving and while accelerating from a stop. In addition, the contact noticed fuel leaking from the front end of the vehicle while the vehicle was parked at the residence. The vehicle was taken to the dealer, where it was diagnosed that the START/STOP accumulator end cap ha… Look up ODI 11704538 at NHTSA ↗
2026-01	8	None	ODI 11708234 Car is cutting off while driving , I’m driving on a busy road , engine jerks and stall out leaving me with no power to accelerate. Brakes work but gas pedal not so much . I have to cut off the car hoping it turns on , cause it don’t want to turn over once I decide to turn it off Look up ODI 11708234 at NHTSA ↗ ODI 11709700 1) Part that failed per General Motors Chevrolet dealer was the Thermostat along with Coolant Sensor. 2) I was getting warning notices on dash board screen stating (Reduced steering assist) I was also getting a ESC warning 3) Problem has been repaired at GM dealer 4) Parts were replaced by GM dealer/service center 5) ESC warning light that came on for a short time after motor stopped for auto stop / start and then restarted. If auto stop / start was turned off ESC warning did not come on. Reduced steering assist warning would come on but then … Look up ODI 11709700 at NHTSA ↗ ODI 11710166 Very bad clunnk on driver side when hitting any bump on the road and it's loud.dealer ship sold me the car like that . Electrical issue gauge cluster radio cluster turn signals your first camera anything that works off the instrument cluster of the radio TV screen goes off while I'm driving comes back on hit a bump it comes back on no headlights driving at night time. The dealership sold me the car like this. Look up ODI 11710166 at NHTSA ↗
2026-02	4	None	ODI 11715555 I received a check engine light which i took to Bell tire for diagnosis. Here is there diagnosis Comments: The P01F0 code on a 2020 Chevy Blazer means the engine coolant temperature is below the normal operating range, often due to a stuck-open thermostat (or both thermostats in models with dual units), a faulty Engine Coolant Temperature (ECT) sensor, or low coolant, leading to poor fuel economy and potential wear; fixing it usually involves replacing the thermostat(s) or sensor after checking coolant levels and wiring. After that i took th… Look up ODI 11715555 at NHTSA ↗ ODI 11715931 Engine showing PO128 code. Steering Assist System reduced power. Engine fan constantly running. Engine temp on dash is stuck on the "C" mark, doesn't move. Thermostat and temp sensor replaced, issue continues. THIS IS A VERY COMMON PROBLEM ON GM VEHICLES WITH THE 3.6L AROUND THE 60,000 MILE MARK. GM NEEDS TO GET IT FIGURED OUT. Look up ODI 11715931 at NHTSA ↗ ODI 11717071 Driving down the road at 50 mpg when to car just shut off had a hard time getting it off the road and did still was all the way we almost got hit three times Look up ODI 11717071 at NHTSA ↗
2026-03	3	None	ODI 11723438 P0128 code for thermostat issue. Fans run after shutting car off. Steering assist reduced message. Check engine light. Chevy knows this is a common issue. This needs to be investigated asap. Look up ODI 11723438 at NHTSA ↗ ODI 11723443 Vehicle has shift to park light and will not turn off even with the shifter in the park position. Look up ODI 11723443 at NHTSA ↗ ODI 11724826 Just took my car to the Chevy dealership today and had them go over the car because I keep getting the message steering assist has been reduced and the fan is constantly running at the highest speed and it also makes it where I can not use the a/c or heat in the car! I don’t know the code off hand but it has something to do with the cam shaft and the thermostat for the antifreeze! From what Chevy told me today it is a $9000 job to tear down the left side of the engine because the camshaft carrier gasket is leaking oil! Which is probably why tha… Look up ODI 11724826 at NHTSA ↗
2026-04	5	None	ODI 11729613 \| Issues first appeared recorded on 3/9/2026, while odometer read 49,663 miles. Check engine light was caused by error codes P0128 and P01F0. This causes the following issues: * Check engine light to appear on the dashboard. * Engine temperature gauges to be unreliable at times or completely non functional at others, as it will constantly read the engine temperature "Cold". * Air conditioning unit to become unreliable at times or completely non functional at others, and only blow hot air. * Radiator fan will be stuck running at max speed d… Look up ODI 11729613 at NHTSA ↗ ODI 11730147 2020 Blazer, 65,000 miles. Temp stuck on cold, A/C blows warm aor and driving assistance off. The radiator fan runs continuously. Check engine light on. Look up ODI 11730147 at NHTSA ↗ ODI 11731894 2020 Chevy Blazer RS 3.6L V6: having intermittent issues with ‘check engine’ light activating and giving code P0128 - indicating “Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)”. Symptoms include: - Temp gauge drops to reading “C” (cold), - AC blows warm/hot air, - Dash displays message, “Steering Assist is Reduced, Drive with Care”, - Radiator (electric) fans run full speed. It seems that the computer is interpreting the engine coolant temperature sensor drop as a ‘stuck open’ thermostat, thus the indicat… Look up ODI 11731894 at NHTSA ↗
2026-05	13	None	ODI 11735381 My car will be running fine but the lights on the AC panel wont work. My car will stop and shut down while driving. Ive taken it in for service and they told me my battery cabels were lose. The second time it happened I got a notification of low battery level and it shut off and will not start. I just replace the battery 2 years ago. The service department tested my battery and said it was fine Look up ODI 11735381 at NHTSA ↗ ODI 11735752 Steering assist reduced drive with care display, air conditioning turned off, stop and start disabled, temperature monitor at cold, fan blows hard Why my 2020 model was not covered under the special coverage N252508350 NHTSA ID# 11024390 Look up ODI 11735752 at NHTSA ↗ ODI 11736372 The check engine light came on with a warning that said "Steering assist reduced drive with care". The temperature gauge went to cold and the air condition quit working. Look up ODI 11736372 at NHTSA ↗
2026-06	8	None	ODI 11741925 This is what came up on my screen.Steering wheel assist reduced.Drive with care. My hot and cold gauge drop to C and stayed there for about 4 days and my a/c was blowing out hot air. I was told a lot of these Suvs have done this. Look up ODI 11741925 at NHTSA ↗ ODI 11742353 Engine temp gauge bottoms out because the thermostat is stuck open, causing the air to stop working. Also a warning that the steering assist is reduced. Eng check light comes on with a code P0208. This a known problem with an extended service # (N242484760) but only if your vin is listed. All vehicles with this problem should be covered Look up ODI 11742353 at NHTSA ↗ ODI 11743407 Engine temp gauge stops working causing the air to stop working and the cooling fan to rev to highest rpm. Also a warning that the steering assist is reduced. Eng check light comes on with a code P0208. This a known problem with an extended service # (N242484760) but only if your vin is listed. All vehicles with this problem should be covered. This seem to be a common problem, as my co-worker is having the same issue. This should be a recall as the steering is affected. Look up ODI 11743407 at NHTSA ↗
2026-07	3	None	ODI 11749470 I'm having an issue with the airbag light keep coming on when I drive at times not safe. Look up ODI 11749470 at NHTSA ↗ ODI 11749661 I was driving and steering reduced drive with caution notification and brake assist notification came on and then engine light and the temp gage went to cold and stayed there. My steering stiffened up making it hard to steer. This is a known problem with the Chevy blazers and it had to do with the thermostat needing replaced. Look up ODI 11749661 at NHTSA ↗ ODI 11749874 Last year I was heading to heading to [XXX] in XXX when I pushed on the brakes on my 2020 Chevy blazer my brakes were working but the steering wheel was shaking weird like I was hard on the brakes but I was tapping them slowly earlier this year right before I had transmission flush at fox Chevy in Caledonia I noticed before two weeks of bringing it in I was near a traffic light slowing down it went hard shift down and when I was not moving in notice it jerked forward when at idle and the light like it was rear ended I feel like this is a safe… Look up ODI 11749874 at NHTSA ↗
2026-08	2	None	ODI 11758760 The car is not sensing that it is in park when it is. When I place it in park and turn the car off it dings and says shift into park however it already is in park. Therefore the car will not turn off. I had to jiggle the shift or turn the car on, reverse then go forward then park to get it to register. This has taken up to 10 minutes and it’s getting worse. This is a known issue that is referenced in GM Technical Service Bulletin 19-NA-206. Look up ODI 11758760 at NHTSA ↗ ODI 11759904 Car is in park but the car alerts that it is not in park ( causing radio and light s to stay on ) - happens continually and from what I have heard from other people and mechanics - this is a known issue with Chevy Look up ODI 11759904 at NHTSA ↗
2026-09	6	None	ODI 11763452 Vehicle: 2020 Chevrolet Blazer V6 System: Electronic Transmission Range Select (ETRS) – Gear Shifter / Park Engagement Concern Type: Potential Unintended Vehicle Motion / Failure to Confirm Park State Description of the Issue On the 2020 Chevrolet Blazer V6, the Electronic Transmission Range Select (ETRS) system fails to confirm that the transmission is in Park, even when the physical gear shifter lever is placed in the Park position. As a result The dashboard displays a "SHIFT TO PARK" warning message in the Driver Information Center (DIC). Th… Look up ODI 11763452 at NHTSA ↗ ODI 11763580 The screen displayed shift to park. The car wouldn’t not recognize it was in park. Had to hit the shifter to get the car to recognize it was in park or it wouldn’t let you turn the car off. There was nothing other than the warning on the screen when we went to get gas and needed to turn the car off. It hasn’t been inspected by any of for this issue. I’m just afraid one day the car may roll if it doesn’t recognize it’s in park. Look up ODI 11763580 at NHTSA ↗ ODI 11764034 · 119,000 mi The contact owns a 2020 Chevrolet Blazer. The contact stated that while operating the vehicle, the check engine warning light intermittently illuminated, and the vehicle hesitated while accelerating. The vehicle was taken to the local dealer to be diagnosed, and the contact was informed that the catalytic converter needed to be replaced. The vehicle was not yet repaired. Additionally, while operating the vehicle, the engine temperature rose to HOT. The vehicle was taken to the local dealer, and the thermostat was replaced. The manufacturer was … Look up ODI 11764034 at NHTSA ↗
2026-10 (partial)	0	None	No examples available for this selection.

Emerging complaint spikes

Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.

This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.

No complete months meet the spike thresholds for this selection.

Equal-age model-year comparison

Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.

Observation windowFirst model yearSecond model year

2022: 15 complaints · 2023: 31 complaints

Equal observation windows
Model year	Through age 0	Through age 1	Through age 2
2022	7	11	15
2023	11	14	31

Date coverage across each selected cohort

Date basis for all complaints in selected model years
Year	Incident dates used	Filing date fallbacks	Excluded dates
2022	50	0	0
2023	41	0	2

Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.

Components reported together

Each cell counts unique complaints naming both components. Open a nonzero cell for examples.

Component co-occurrence matrix
Component	Electrical System	Power Train	Engine	Unknown Or Other	Steering	Service Brakes	Fuel/Propulsion System	Suspension
Electrical System	—	22 ODI 11478119 Shift to park displays despite being in park. I cannot turn off the car or lock the doors. Look up ODI 11478119 at NHTSA ↗ ODI 11490610 My vehicle idiot lights were flashing and the car felt as if it was going to stall on the road. Dealer said it was a faulty P6. Now when driving the car the entertainment unit locked up. Radio could not be changed, volume lowered. Pedals on steering column don't work. Even when car was shut off the radio still played and would cut off. Called my dealership. The earliest my Chevy dealer can look at it is next week. Look up ODI 11490610 at NHTSA ↗ ODI 11542598 Unknown car will not shift into park without me having to re-shift to park and then the vehicle will shut off after re-shifting. Look up ODI 11542598 at NHTSA ↗	17 ODI 11405620 · 300 mi TL* THE CONTACT OWNS A 2020 CHEVROLET BLAZER. THE CONTACT STATED WHILE DRIVING 20 MPH, THE VEHICLE STARTED OVERHEATING. THE CONTACT THEN DROVE THE VEHICLE TO THE SIDE OF THE ROAD AND NOTICED THAT THE VEHICLE WAS LEAKING OIL. THE VEHICLE WAS THEN TOWED TO AN UNKNOWN DEALER. THE CONTACT STATED THAT SEVERAL UNKNOWN WARNING LIGHTS WERE ILLUMINATED. THE VEHICLE WAS TAKEN TO CHEVROLET OF COLUMBUS (2825 MERCHANT MILE, COLUMBUS, IN 47201) WHERE IT WAS DIAGNOSED WITH RODENT DAMAGE TO THE WIRING HARNESS. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAD… Look up ODI 11405620 at NHTSA ↗ ODI 11500970 Value stem gasket covers need replacing oil spilling out everywhere it’s a 2020 should not be happening Oil leak Hot and cold temperature not working properly A warning flashing for the power steering being deceased and not use That car get moved every hour just about always in jt working or just taking a break The auto shut of makes transmission slip or sounds like it is Look up ODI 11500970 at NHTSA ↗ ODI 11592931 Esc message on dashboard & all wheel drive disabled & lane assist traction control liggt turns on & parking brake light turns on while driving caused for my electric component to act all crazy including my sunroof I’ve been in the dealer over over try to fix it and that is concerning reason for my safety while u are driving and all those lights come on And yes I have took it to the dealer multiple times to fix this situation And yes the vehicle has been inspected by the manufacturer And yes it has happen before i have a 1 year with the… Look up ODI 11592931 at NHTSA ↗	17 ODI 11609387 When I put the car in park it does not register and will not come out of accessory more. This is a known issue and gm is making customers out of warranty pay for it Look up ODI 11609387 at NHTSA ↗ ODI 11621425 Vehicle keeps throwing “steering assistance reduced please drive with care” message. It causes my car fan to constantly run. It also causes the coolant gauge to not work the needle drops below that cool like it’s not on and then the car won’t blow cold air from the vents. This message tells me that something could be wrong with the steering which puts my safety at risk. This issue has been happening to me on and off for months now and there are multiple complaints of multiple Chevy owners having the same problem this issue needs to be addressed… Look up ODI 11621425 at NHTSA ↗ ODI 11621426 Vehicle keeps throwing “steering assistance reduced please drive with care” message. It causes my car fan to constantly run. It also causes the coolant gauge to not work the needle drops below that cool like it’s not on and then the car won’t blow cold air from the vents. This message tells me that something could be wrong with the steering which puts my safety at risk. This issue has been happening to me on and off for months now and there are multiple complaints of multiple Chevy owners having the same problem this issue needs to be addressed… Look up ODI 11621426 at NHTSA ↗	16 ODI 11414919 · 8,665 mi REARVIEW CAMERA AND BACK UP CAMERA CONSTANTLY NOT FUNCTIONING AND GOING BLACK WHILE AND MOTION OR BACKING UP. CAR ACTS LIKE THERE IS SOMETHING IN FRONT OF IT (LIKE A WALL) ON CERTAIN ROADS AND DOES NOT WANT TO ACCELERATE TO TURN/PULL OUT FROM A STOPPED POSITION. I HAVE HAD THIS VEHICLE FOR 2 MONTHS. I HAVE HAD A CAR PRIOR TO THIS THAT DID THIS BEFORE AND STOPPED AND LEFT ME STRANDED ON A BUSY ROAD AND CAUSED AN ACCIDENT. I CAN'T BELIEVE THIS CAR IS ACTING LIKE THIS! Look up ODI 11414919 at NHTSA ↗ ODI 11500970 Value stem gasket covers need replacing oil spilling out everywhere it’s a 2020 should not be happening Oil leak Hot and cold temperature not working properly A warning flashing for the power steering being deceased and not use That car get moved every hour just about always in jt working or just taking a break The auto shut of makes transmission slip or sounds like it is Look up ODI 11500970 at NHTSA ↗ ODI 11621425 Vehicle keeps throwing “steering assistance reduced please drive with care” message. It causes my car fan to constantly run. It also causes the coolant gauge to not work the needle drops below that cool like it’s not on and then the car won’t blow cold air from the vents. This message tells me that something could be wrong with the steering which puts my safety at risk. This issue has been happening to me on and off for months now and there are multiple complaints of multiple Chevy owners having the same problem this issue needs to be addressed… Look up ODI 11621425 at NHTSA ↗	5 ODI 11414919 · 8,665 mi REARVIEW CAMERA AND BACK UP CAMERA CONSTANTLY NOT FUNCTIONING AND GOING BLACK WHILE AND MOTION OR BACKING UP. CAR ACTS LIKE THERE IS SOMETHING IN FRONT OF IT (LIKE A WALL) ON CERTAIN ROADS AND DOES NOT WANT TO ACCELERATE TO TURN/PULL OUT FROM A STOPPED POSITION. I HAVE HAD THIS VEHICLE FOR 2 MONTHS. I HAVE HAD A CAR PRIOR TO THIS THAT DID THIS BEFORE AND STOPPED AND LEFT ME STRANDED ON A BUSY ROAD AND CAUSED AN ACCIDENT. I CAN'T BELIEVE THIS CAR IS ACTING LIKE THIS! Look up ODI 11414919 at NHTSA ↗ ODI 11453468 The service advisor at the Chevrolet dealership denied a repair to my abs control module because it was a “known issue”. He told my wife and I our car is unsafe to drive And still wants to give it back to us. Other Gm vehicles have recalls open for the same issue one needs to be open for this. Abs lights and multiple others no brakes or random braking. Look up ODI 11453468 at NHTSA ↗ ODI 11693643 When I try to park the car, it says shift to park. Sometimes I can’t get the car to go into park to exit the vehicle or other times. I’ve shut the door and it has stayed on with the accessories because it won’t shut off Look up ODI 11693643 at NHTSA ↗	3 ODI 11660419 To Whom It May Concern, I am writing to formally file a complaint regarding ongoing and persistent issues with my 2020 Chevrolet Blazer. The vehicle has exhibited repeated problems that I believe may indicate a broader safety or mechanical defect, and I am requesting that the NHTSA investigate these concerns further. Since purchasing the vehicle, I have experienced the check engine light turning on and off repeatedly, without consistent resolution. The following issues have occurred over time, all seemingly related to the engine or control sy… Look up ODI 11660419 at NHTSA ↗ ODI 11715555 I received a check engine light which i took to Bell tire for diagnosis. Here is there diagnosis Comments: The P01F0 code on a 2020 Chevy Blazer means the engine coolant temperature is below the normal operating range, often due to a stuck-open thermostat (or both thermostats in models with dual units), a faulty Engine Coolant Temperature (ECT) sensor, or low coolant, leading to poor fuel economy and potential wear; fixing it usually involves replacing the thermostat(s) or sensor after checking coolant levels and wiring. After that i took th… Look up ODI 11715555 at NHTSA ↗ ODI 11735381 My car will be running fine but the lights on the AC panel wont work. My car will stop and shut down while driving. Ive taken it in for service and they told me my battery cabels were lose. The second time it happened I got a notification of low battery level and it shut off and will not start. I just replace the battery 2 years ago. The service department tested my battery and said it was fine Look up ODI 11735381 at NHTSA ↗	1 ODI 11710166 Very bad clunnk on driver side when hitting any bump on the road and it's loud.dealer ship sold me the car like that . Electrical issue gauge cluster radio cluster turn signals your first camera anything that works off the instrument cluster of the radio TV screen goes off while I'm driving comes back on hit a bump it comes back on no headlights driving at night time. The dealership sold me the car like this. Look up ODI 11710166 at NHTSA ↗
Power Train	22 ODI 11478119 Shift to park displays despite being in park. I cannot turn off the car or lock the doors. Look up ODI 11478119 at NHTSA ↗ ODI 11490610 My vehicle idiot lights were flashing and the car felt as if it was going to stall on the road. Dealer said it was a faulty P6. Now when driving the car the entertainment unit locked up. Radio could not be changed, volume lowered. Pedals on steering column don't work. Even when car was shut off the radio still played and would cut off. Called my dealership. The earliest my Chevy dealer can look at it is next week. Look up ODI 11490610 at NHTSA ↗ ODI 11542598 Unknown car will not shift into park without me having to re-shift to park and then the vehicle will shut off after re-shifting. Look up ODI 11542598 at NHTSA ↗	—	14 ODI 11514633 My 2020 Chevy Blazer began demonstrating possible problems with the transmission in November 2021 which have continued to date. The RPMs will rapidly increase and the car will feel as if it is jolting forward. If driving below 20 mphs, when I try to accelerate to a higher speed, the car will drag and then skip forward. I have videos showing this and have taken it to the dealership on two occasions but it couldn't be replicated and no codes show during diagnositics. The car is currently being repaired (at the dealership since 3/18/22) due … Look up ODI 11514633 at NHTSA ↗ ODI 11580201 Transmission issue, computer repair, constant issues. Look up ODI 11580201 at NHTSA ↗ ODI 11581056 Steering assist reduced warning came on as I was driving. Electric steering module has gone bad.Temp gage and AC stopped working as well. No accident yet but this is a KNOWN SAFETY DEFECT that needs to have a recall. The steering wheel could lock up. Force GM to recall this vechile before people die!! Look up ODI 11581056 at NHTSA ↗	8 ODI 11609387 When I put the car in park it does not register and will not come out of accessory more. This is a known issue and gm is making customers out of warranty pay for it Look up ODI 11609387 at NHTSA ↗ ODI 11616457 2020 Chevy Blazer - Shift to Park while Gear is already in Park: While putting the gear in park, the warning chime to shift it into park is initiated. It has happened 3 to 4 times in the past three days. I took the vehicle to the Local Chevy Dealership. The Service Team/Dept. diagnosed that the Transmission Shifter Unit Assembly must be replaced. The 2019 Chevy Blazer had these issues which prompted a TSB/Recall however it wasn't extended to the 2020-year models and Chevy Dealership refused to include it as a warranted repair which just pa… Look up ODI 11616457 at NHTSA ↗ ODI 11625728 P0128 code- Assisted steering fault Check engine light Ac blowing cold Temp gauge flat lined Need to replace temp sensor and thermostat. Others with this issue have reported steering can completely lock up, which could cause serious accidents which could result in fatalities. Look up ODI 11625728 at NHTSA ↗	9 ODI 11514633 My 2020 Chevy Blazer began demonstrating possible problems with the transmission in November 2021 which have continued to date. The RPMs will rapidly increase and the car will feel as if it is jolting forward. If driving below 20 mphs, when I try to accelerate to a higher speed, the car will drag and then skip forward. I have videos showing this and have taken it to the dealership on two occasions but it couldn't be replicated and no codes show during diagnositics. The car is currently being repaired (at the dealership since 3/18/22) due … Look up ODI 11514633 at NHTSA ↗ ODI 11571805 As I was driving, my engine coolant temperature gauge went from normal level down all the way pegged to C. Message appears on my dashboard "Steering Assist is Reduced. Drive with Care". Also, radiator fan continuously runs as if the air conditioner was turned on, which it was not. After searching the internet and confirmed by dealerships and the shop I had my car repaired, this same issue with the coolant temp sensor and thermostat is a very common occurrence on these generation Chevy Blazers. It just amazes me and disappoints me that this typ… Look up ODI 11571805 at NHTSA ↗ ODI 11581056 Steering assist reduced warning came on as I was driving. Electric steering module has gone bad.Temp gage and AC stopped working as well. No accident yet but this is a KNOWN SAFETY DEFECT that needs to have a recall. The steering wheel could lock up. Force GM to recall this vechile before people die!! Look up ODI 11581056 at NHTSA ↗	2 ODI 11580201 Transmission issue, computer repair, constant issues. Look up ODI 11580201 at NHTSA ↗ ODI 11749874 Last year I was heading to heading to [XXX] in XXX when I pushed on the brakes on my 2020 Chevy blazer my brakes were working but the steering wheel was shaking weird like I was hard on the brakes but I was tapping them slowly earlier this year right before I had transmission flush at fox Chevy in Caledonia I noticed before two weeks of bringing it in I was near a traffic light slowing down it went hard shift down and when I was not moving in notice it jerked forward when at idle and the light like it was rear ended I feel like this is a safe… Look up ODI 11749874 at NHTSA ↗	0	1 ODI 11627354 Questions Answered Below: What component or system failed or malfunctioned, and is it available for inspection upon request? The vehicle is at a GM Dealership now and is available for inspection. I have not authorized repairs as of yet. I am being told by the dealership: The ball joint on the control arm on the left side seized snapping the axle shaft - causing the tire to to turn out. The dealership has suggested: Mechanical repair costs $1,850, Plus an additional $2,000 due to wheel well damage caused by the failure. Has the problem bee… Look up ODI 11627354 at NHTSA ↗
Engine	17 ODI 11405620 · 300 mi TL* THE CONTACT OWNS A 2020 CHEVROLET BLAZER. THE CONTACT STATED WHILE DRIVING 20 MPH, THE VEHICLE STARTED OVERHEATING. THE CONTACT THEN DROVE THE VEHICLE TO THE SIDE OF THE ROAD AND NOTICED THAT THE VEHICLE WAS LEAKING OIL. THE VEHICLE WAS THEN TOWED TO AN UNKNOWN DEALER. THE CONTACT STATED THAT SEVERAL UNKNOWN WARNING LIGHTS WERE ILLUMINATED. THE VEHICLE WAS TAKEN TO CHEVROLET OF COLUMBUS (2825 MERCHANT MILE, COLUMBUS, IN 47201) WHERE IT WAS DIAGNOSED WITH RODENT DAMAGE TO THE WIRING HARNESS. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAD… Look up ODI 11405620 at NHTSA ↗ ODI 11500970 Value stem gasket covers need replacing oil spilling out everywhere it’s a 2020 should not be happening Oil leak Hot and cold temperature not working properly A warning flashing for the power steering being deceased and not use That car get moved every hour just about always in jt working or just taking a break The auto shut of makes transmission slip or sounds like it is Look up ODI 11500970 at NHTSA ↗ ODI 11592931 Esc message on dashboard & all wheel drive disabled & lane assist traction control liggt turns on & parking brake light turns on while driving caused for my electric component to act all crazy including my sunroof I’ve been in the dealer over over try to fix it and that is concerning reason for my safety while u are driving and all those lights come on And yes I have took it to the dealer multiple times to fix this situation And yes the vehicle has been inspected by the manufacturer And yes it has happen before i have a 1 year with the… Look up ODI 11592931 at NHTSA ↗	14 ODI 11514633 My 2020 Chevy Blazer began demonstrating possible problems with the transmission in November 2021 which have continued to date. The RPMs will rapidly increase and the car will feel as if it is jolting forward. If driving below 20 mphs, when I try to accelerate to a higher speed, the car will drag and then skip forward. I have videos showing this and have taken it to the dealership on two occasions but it couldn't be replicated and no codes show during diagnositics. The car is currently being repaired (at the dealership since 3/18/22) due … Look up ODI 11514633 at NHTSA ↗ ODI 11580201 Transmission issue, computer repair, constant issues. Look up ODI 11580201 at NHTSA ↗ ODI 11581056 Steering assist reduced warning came on as I was driving. Electric steering module has gone bad.Temp gage and AC stopped working as well. No accident yet but this is a KNOWN SAFETY DEFECT that needs to have a recall. The steering wheel could lock up. Force GM to recall this vechile before people die!! Look up ODI 11581056 at NHTSA ↗	—	3 ODI 11599228 6/12/2024 In Damon Parking lot in Rochester MN. Going less than 10 miles an hr- cars in front of me and behind me looking for a parking spot. Stop and go at times. Went to turn corner to go from one level to the next and my BLAZER took off "like a bullet". No control over accelerated speed- hit outer cement wall and slammed into 2 parked empty SUVS. Could not go any farther. The 2 SUVs slammed into cement wall in front of them. Injuries to both my passenger and myself. I have no idea what happened - it was so fast- I do know I had no control o… Look up ODI 11599228 at NHTSA ↗ ODI 11608438 Shift to park issues. Car not reading that it’s in park. Look up ODI 11608438 at NHTSA ↗ ODI 11690677 The original issue was that the temperature gauge was pegged on cold and the A/C was inoperative. The vehicle’s fans would run continuously even when the engine was cold. This created a safety concern since the engine’s actual temperature could not be monitored, and loss of A/C affected drivability in hot conditions. The issue appears related to the engine’s coolant temperature sensor or thermostat system, which causes incorrect signals to the temperature gauge and HVAC system. The condition has been reported by multiple owners of the 2020 Che… Look up ODI 11690677 at NHTSA ↗	17 ODI 11405615 · 6,000 mi IN 2 OCCASIONS MY VEHICLE CAME TO A COMPLETE STOP AND TURNED OFF ON ME. I WAS THINKING IT WAS A SAFETY FEATURE BUT AFTER THE 2ND TIME I WAS CONCERNED. TOOK IT TO DEALERSHIP AND THEY FOUND NOTHING WRONG WITH IT. ON ANOTHER OCCASION I WAS LEAVING MY HOUSE WHEN MY STEERING WHEEL GOT SUPER HARD AND MADE IT VERY DIFFICULT FOR ME TO TURN THE WHEEL. TOOK IT TO DEALERSHIP AND THEY FOUND NOTHING WRONG, ACCORDING TO THEM TRUCK WAS PERFECTLY FINE. Look up ODI 11405615 at NHTSA ↗ ODI 11500970 Value stem gasket covers need replacing oil spilling out everywhere it’s a 2020 should not be happening Oil leak Hot and cold temperature not working properly A warning flashing for the power steering being deceased and not use That car get moved every hour just about always in jt working or just taking a break The auto shut of makes transmission slip or sounds like it is Look up ODI 11500970 at NHTSA ↗ ODI 11514633 My 2020 Chevy Blazer began demonstrating possible problems with the transmission in November 2021 which have continued to date. The RPMs will rapidly increase and the car will feel as if it is jolting forward. If driving below 20 mphs, when I try to accelerate to a higher speed, the car will drag and then skip forward. I have videos showing this and have taken it to the dealership on two occasions but it couldn't be replicated and no codes show during diagnositics. The car is currently being repaired (at the dealership since 3/18/22) due … Look up ODI 11514633 at NHTSA ↗	3 ODI 11580201 Transmission issue, computer repair, constant issues. Look up ODI 11580201 at NHTSA ↗ ODI 11736372 The check engine light came on with a warning that said "Steering assist reduced drive with care". The temperature gauge went to cold and the air condition quit working. Look up ODI 11736372 at NHTSA ↗ ODI 11749661 I was driving and steering reduced drive with caution notification and brake assist notification came on and then engine light and the temp gage went to cold and stayed there. My steering stiffened up making it hard to steer. This is a known problem with the Chevy blazers and it had to do with the thermostat needing replaced. Look up ODI 11749661 at NHTSA ↗	3 ODI 11599228 6/12/2024 In Damon Parking lot in Rochester MN. Going less than 10 miles an hr- cars in front of me and behind me looking for a parking spot. Stop and go at times. Went to turn corner to go from one level to the next and my BLAZER took off "like a bullet". No control over accelerated speed- hit outer cement wall and slammed into 2 parked empty SUVS. Could not go any farther. The 2 SUVs slammed into cement wall in front of them. Injuries to both my passenger and myself. I have no idea what happened - it was so fast- I do know I had no control o… Look up ODI 11599228 at NHTSA ↗ ODI 11660419 To Whom It May Concern, I am writing to formally file a complaint regarding ongoing and persistent issues with my 2020 Chevrolet Blazer. The vehicle has exhibited repeated problems that I believe may indicate a broader safety or mechanical defect, and I am requesting that the NHTSA investigate these concerns further. Since purchasing the vehicle, I have experienced the check engine light turning on and off repeatedly, without consistent resolution. The following issues have occurred over time, all seemingly related to the engine or control sy… Look up ODI 11660419 at NHTSA ↗ ODI 11715555 I received a check engine light which i took to Bell tire for diagnosis. Here is there diagnosis Comments: The P01F0 code on a 2020 Chevy Blazer means the engine coolant temperature is below the normal operating range, often due to a stuck-open thermostat (or both thermostats in models with dual units), a faulty Engine Coolant Temperature (ECT) sensor, or low coolant, leading to poor fuel economy and potential wear; fixing it usually involves replacing the thermostat(s) or sensor after checking coolant levels and wiring. After that i took th… Look up ODI 11715555 at NHTSA ↗	0
Unknown Or Other	17 ODI 11609387 When I put the car in park it does not register and will not come out of accessory more. This is a known issue and gm is making customers out of warranty pay for it Look up ODI 11609387 at NHTSA ↗ ODI 11621425 Vehicle keeps throwing “steering assistance reduced please drive with care” message. It causes my car fan to constantly run. It also causes the coolant gauge to not work the needle drops below that cool like it’s not on and then the car won’t blow cold air from the vents. This message tells me that something could be wrong with the steering which puts my safety at risk. This issue has been happening to me on and off for months now and there are multiple complaints of multiple Chevy owners having the same problem this issue needs to be addressed… Look up ODI 11621425 at NHTSA ↗ ODI 11621426 Vehicle keeps throwing “steering assistance reduced please drive with care” message. It causes my car fan to constantly run. It also causes the coolant gauge to not work the needle drops below that cool like it’s not on and then the car won’t blow cold air from the vents. This message tells me that something could be wrong with the steering which puts my safety at risk. This issue has been happening to me on and off for months now and there are multiple complaints of multiple Chevy owners having the same problem this issue needs to be addressed… Look up ODI 11621426 at NHTSA ↗	8 ODI 11609387 When I put the car in park it does not register and will not come out of accessory more. This is a known issue and gm is making customers out of warranty pay for it Look up ODI 11609387 at NHTSA ↗ ODI 11616457 2020 Chevy Blazer - Shift to Park while Gear is already in Park: While putting the gear in park, the warning chime to shift it into park is initiated. It has happened 3 to 4 times in the past three days. I took the vehicle to the Local Chevy Dealership. The Service Team/Dept. diagnosed that the Transmission Shifter Unit Assembly must be replaced. The 2019 Chevy Blazer had these issues which prompted a TSB/Recall however it wasn't extended to the 2020-year models and Chevy Dealership refused to include it as a warranted repair which just pa… Look up ODI 11616457 at NHTSA ↗ ODI 11625728 P0128 code- Assisted steering fault Check engine light Ac blowing cold Temp gauge flat lined Need to replace temp sensor and thermostat. Others with this issue have reported steering can completely lock up, which could cause serious accidents which could result in fatalities. Look up ODI 11625728 at NHTSA ↗	3 ODI 11599228 6/12/2024 In Damon Parking lot in Rochester MN. Going less than 10 miles an hr- cars in front of me and behind me looking for a parking spot. Stop and go at times. Went to turn corner to go from one level to the next and my BLAZER took off "like a bullet". No control over accelerated speed- hit outer cement wall and slammed into 2 parked empty SUVS. Could not go any farther. The 2 SUVs slammed into cement wall in front of them. Injuries to both my passenger and myself. I have no idea what happened - it was so fast- I do know I had no control o… Look up ODI 11599228 at NHTSA ↗ ODI 11608438 Shift to park issues. Car not reading that it’s in park. Look up ODI 11608438 at NHTSA ↗ ODI 11690677 The original issue was that the temperature gauge was pegged on cold and the A/C was inoperative. The vehicle’s fans would run continuously even when the engine was cold. This created a safety concern since the engine’s actual temperature could not be monitored, and loss of A/C affected drivability in hot conditions. The issue appears related to the engine’s coolant temperature sensor or thermostat system, which causes incorrect signals to the temperature gauge and HVAC system. The condition has been reported by multiple owners of the 2020 Che… Look up ODI 11690677 at NHTSA ↗	—	9 ODI 11587976 Message pops up saying steering assist is reduced please drive with care. Then the car fan runs all the time on high and the cars temp gauge is running all the way on cool. Look up ODI 11587976 at NHTSA ↗ ODI 11587977 Message pops up saying steering assist is reduced please drive with care. Then the car fan runs all the time on high and the cars temp gauge is running all the way on cool. Look up ODI 11587977 at NHTSA ↗ ODI 11621425 Vehicle keeps throwing “steering assistance reduced please drive with care” message. It causes my car fan to constantly run. It also causes the coolant gauge to not work the needle drops below that cool like it’s not on and then the car won’t blow cold air from the vents. This message tells me that something could be wrong with the steering which puts my safety at risk. This issue has been happening to me on and off for months now and there are multiple complaints of multiple Chevy owners having the same problem this issue needs to be addressed… Look up ODI 11621425 at NHTSA ↗	3 ODI 11693643 When I try to park the car, it says shift to park. Sometimes I can’t get the car to go into park to exit the vehicle or other times. I’ve shut the door and it has stayed on with the accessories because it won’t shut off Look up ODI 11693643 at NHTSA ↗ ODI 11695572 Shift to park issue. Vehicle shifts into park but does not register as such. Therefore, the vehicle keeps running and will not turn off or allow you to exist the vehicle. This is already a know issue with certain GM vehicles as is evident by a recall and Service Bulletins. However, none of those include the 2020 Chevy Blazer. Look up ODI 11695572 at NHTSA ↗ ODI 11738429 Vehicle: 2020 Chevrolet Blazer Issue: “Shift to Park” malfunction Description: The vehicle repeatedly displays a “Shift to Park” warning message even when the gear selector is fully placed in Park. Because of this issue, the vehicle does not always shut off properly and may continue running electrical systems after the engine is turned off. Symptoms include: * Warning message stating “Shift to Park” * Vehicle not recognizing that it is in Park * Difficulty shutting vehicle off completely * Doors/horn behavior acting abnormally after exiting … Look up ODI 11738429 at NHTSA ↗	1 ODI 11599228 6/12/2024 In Damon Parking lot in Rochester MN. Going less than 10 miles an hr- cars in front of me and behind me looking for a parking spot. Stop and go at times. Went to turn corner to go from one level to the next and my BLAZER took off "like a bullet". No control over accelerated speed- hit outer cement wall and slammed into 2 parked empty SUVS. Could not go any farther. The 2 SUVs slammed into cement wall in front of them. Injuries to both my passenger and myself. I have no idea what happened - it was so fast- I do know I had no control o… Look up ODI 11599228 at NHTSA ↗	1 ODI 11709700 1) Part that failed per General Motors Chevrolet dealer was the Thermostat along with Coolant Sensor. 2) I was getting warning notices on dash board screen stating (Reduced steering assist) I was also getting a ESC warning 3) Problem has been repaired at GM dealer 4) Parts were replaced by GM dealer/service center 5) ESC warning light that came on for a short time after motor stopped for auto stop / start and then restarted. If auto stop / start was turned off ESC warning did not come on. Reduced steering assist warning would come on but then … Look up ODI 11709700 at NHTSA ↗
Steering	16 ODI 11414919 · 8,665 mi REARVIEW CAMERA AND BACK UP CAMERA CONSTANTLY NOT FUNCTIONING AND GOING BLACK WHILE AND MOTION OR BACKING UP. CAR ACTS LIKE THERE IS SOMETHING IN FRONT OF IT (LIKE A WALL) ON CERTAIN ROADS AND DOES NOT WANT TO ACCELERATE TO TURN/PULL OUT FROM A STOPPED POSITION. I HAVE HAD THIS VEHICLE FOR 2 MONTHS. I HAVE HAD A CAR PRIOR TO THIS THAT DID THIS BEFORE AND STOPPED AND LEFT ME STRANDED ON A BUSY ROAD AND CAUSED AN ACCIDENT. I CAN'T BELIEVE THIS CAR IS ACTING LIKE THIS! Look up ODI 11414919 at NHTSA ↗ ODI 11500970 Value stem gasket covers need replacing oil spilling out everywhere it’s a 2020 should not be happening Oil leak Hot and cold temperature not working properly A warning flashing for the power steering being deceased and not use That car get moved every hour just about always in jt working or just taking a break The auto shut of makes transmission slip or sounds like it is Look up ODI 11500970 at NHTSA ↗ ODI 11621425 Vehicle keeps throwing “steering assistance reduced please drive with care” message. It causes my car fan to constantly run. It also causes the coolant gauge to not work the needle drops below that cool like it’s not on and then the car won’t blow cold air from the vents. This message tells me that something could be wrong with the steering which puts my safety at risk. This issue has been happening to me on and off for months now and there are multiple complaints of multiple Chevy owners having the same problem this issue needs to be addressed… Look up ODI 11621425 at NHTSA ↗	9 ODI 11514633 My 2020 Chevy Blazer began demonstrating possible problems with the transmission in November 2021 which have continued to date. The RPMs will rapidly increase and the car will feel as if it is jolting forward. If driving below 20 mphs, when I try to accelerate to a higher speed, the car will drag and then skip forward. I have videos showing this and have taken it to the dealership on two occasions but it couldn't be replicated and no codes show during diagnositics. The car is currently being repaired (at the dealership since 3/18/22) due … Look up ODI 11514633 at NHTSA ↗ ODI 11571805 As I was driving, my engine coolant temperature gauge went from normal level down all the way pegged to C. Message appears on my dashboard "Steering Assist is Reduced. Drive with Care". Also, radiator fan continuously runs as if the air conditioner was turned on, which it was not. After searching the internet and confirmed by dealerships and the shop I had my car repaired, this same issue with the coolant temp sensor and thermostat is a very common occurrence on these generation Chevy Blazers. It just amazes me and disappoints me that this typ… Look up ODI 11571805 at NHTSA ↗ ODI 11581056 Steering assist reduced warning came on as I was driving. Electric steering module has gone bad.Temp gage and AC stopped working as well. No accident yet but this is a KNOWN SAFETY DEFECT that needs to have a recall. The steering wheel could lock up. Force GM to recall this vechile before people die!! Look up ODI 11581056 at NHTSA ↗	17 ODI 11405615 · 6,000 mi IN 2 OCCASIONS MY VEHICLE CAME TO A COMPLETE STOP AND TURNED OFF ON ME. I WAS THINKING IT WAS A SAFETY FEATURE BUT AFTER THE 2ND TIME I WAS CONCERNED. TOOK IT TO DEALERSHIP AND THEY FOUND NOTHING WRONG WITH IT. ON ANOTHER OCCASION I WAS LEAVING MY HOUSE WHEN MY STEERING WHEEL GOT SUPER HARD AND MADE IT VERY DIFFICULT FOR ME TO TURN THE WHEEL. TOOK IT TO DEALERSHIP AND THEY FOUND NOTHING WRONG, ACCORDING TO THEM TRUCK WAS PERFECTLY FINE. Look up ODI 11405615 at NHTSA ↗ ODI 11500970 Value stem gasket covers need replacing oil spilling out everywhere it’s a 2020 should not be happening Oil leak Hot and cold temperature not working properly A warning flashing for the power steering being deceased and not use That car get moved every hour just about always in jt working or just taking a break The auto shut of makes transmission slip or sounds like it is Look up ODI 11500970 at NHTSA ↗ ODI 11514633 My 2020 Chevy Blazer began demonstrating possible problems with the transmission in November 2021 which have continued to date. The RPMs will rapidly increase and the car will feel as if it is jolting forward. If driving below 20 mphs, when I try to accelerate to a higher speed, the car will drag and then skip forward. I have videos showing this and have taken it to the dealership on two occasions but it couldn't be replicated and no codes show during diagnositics. The car is currently being repaired (at the dealership since 3/18/22) due … Look up ODI 11514633 at NHTSA ↗	9 ODI 11587976 Message pops up saying steering assist is reduced please drive with care. Then the car fan runs all the time on high and the cars temp gauge is running all the way on cool. Look up ODI 11587976 at NHTSA ↗ ODI 11587977 Message pops up saying steering assist is reduced please drive with care. Then the car fan runs all the time on high and the cars temp gauge is running all the way on cool. Look up ODI 11587977 at NHTSA ↗ ODI 11621425 Vehicle keeps throwing “steering assistance reduced please drive with care” message. It causes my car fan to constantly run. It also causes the coolant gauge to not work the needle drops below that cool like it’s not on and then the car won’t blow cold air from the vents. This message tells me that something could be wrong with the steering which puts my safety at risk. This issue has been happening to me on and off for months now and there are multiple complaints of multiple Chevy owners having the same problem this issue needs to be addressed… Look up ODI 11621425 at NHTSA ↗	—	2 ODI 11414919 · 8,665 mi REARVIEW CAMERA AND BACK UP CAMERA CONSTANTLY NOT FUNCTIONING AND GOING BLACK WHILE AND MOTION OR BACKING UP. CAR ACTS LIKE THERE IS SOMETHING IN FRONT OF IT (LIKE A WALL) ON CERTAIN ROADS AND DOES NOT WANT TO ACCELERATE TO TURN/PULL OUT FROM A STOPPED POSITION. I HAVE HAD THIS VEHICLE FOR 2 MONTHS. I HAVE HAD A CAR PRIOR TO THIS THAT DID THIS BEFORE AND STOPPED AND LEFT ME STRANDED ON A BUSY ROAD AND CAUSED AN ACCIDENT. I CAN'T BELIEVE THIS CAR IS ACTING LIKE THIS! Look up ODI 11414919 at NHTSA ↗ ODI 11749661 I was driving and steering reduced drive with caution notification and brake assist notification came on and then engine light and the temp gage went to cold and stayed there. My steering stiffened up making it hard to steer. This is a known problem with the Chevy blazers and it had to do with the thermostat needing replaced. Look up ODI 11749661 at NHTSA ↗	0	1 ODI 11709700 1) Part that failed per General Motors Chevrolet dealer was the Thermostat along with Coolant Sensor. 2) I was getting warning notices on dash board screen stating (Reduced steering assist) I was also getting a ESC warning 3) Problem has been repaired at GM dealer 4) Parts were replaced by GM dealer/service center 5) ESC warning light that came on for a short time after motor stopped for auto stop / start and then restarted. If auto stop / start was turned off ESC warning did not come on. Reduced steering assist warning would come on but then … Look up ODI 11709700 at NHTSA ↗
Service Brakes	5 ODI 11414919 · 8,665 mi REARVIEW CAMERA AND BACK UP CAMERA CONSTANTLY NOT FUNCTIONING AND GOING BLACK WHILE AND MOTION OR BACKING UP. CAR ACTS LIKE THERE IS SOMETHING IN FRONT OF IT (LIKE A WALL) ON CERTAIN ROADS AND DOES NOT WANT TO ACCELERATE TO TURN/PULL OUT FROM A STOPPED POSITION. I HAVE HAD THIS VEHICLE FOR 2 MONTHS. I HAVE HAD A CAR PRIOR TO THIS THAT DID THIS BEFORE AND STOPPED AND LEFT ME STRANDED ON A BUSY ROAD AND CAUSED AN ACCIDENT. I CAN'T BELIEVE THIS CAR IS ACTING LIKE THIS! Look up ODI 11414919 at NHTSA ↗ ODI 11453468 The service advisor at the Chevrolet dealership denied a repair to my abs control module because it was a “known issue”. He told my wife and I our car is unsafe to drive And still wants to give it back to us. Other Gm vehicles have recalls open for the same issue one needs to be open for this. Abs lights and multiple others no brakes or random braking. Look up ODI 11453468 at NHTSA ↗ ODI 11693643 When I try to park the car, it says shift to park. Sometimes I can’t get the car to go into park to exit the vehicle or other times. I’ve shut the door and it has stayed on with the accessories because it won’t shut off Look up ODI 11693643 at NHTSA ↗	2 ODI 11580201 Transmission issue, computer repair, constant issues. Look up ODI 11580201 at NHTSA ↗ ODI 11749874 Last year I was heading to heading to [XXX] in XXX when I pushed on the brakes on my 2020 Chevy blazer my brakes were working but the steering wheel was shaking weird like I was hard on the brakes but I was tapping them slowly earlier this year right before I had transmission flush at fox Chevy in Caledonia I noticed before two weeks of bringing it in I was near a traffic light slowing down it went hard shift down and when I was not moving in notice it jerked forward when at idle and the light like it was rear ended I feel like this is a safe… Look up ODI 11749874 at NHTSA ↗	3 ODI 11580201 Transmission issue, computer repair, constant issues. Look up ODI 11580201 at NHTSA ↗ ODI 11736372 The check engine light came on with a warning that said "Steering assist reduced drive with care". The temperature gauge went to cold and the air condition quit working. Look up ODI 11736372 at NHTSA ↗ ODI 11749661 I was driving and steering reduced drive with caution notification and brake assist notification came on and then engine light and the temp gage went to cold and stayed there. My steering stiffened up making it hard to steer. This is a known problem with the Chevy blazers and it had to do with the thermostat needing replaced. Look up ODI 11749661 at NHTSA ↗	3 ODI 11693643 When I try to park the car, it says shift to park. Sometimes I can’t get the car to go into park to exit the vehicle or other times. I’ve shut the door and it has stayed on with the accessories because it won’t shut off Look up ODI 11693643 at NHTSA ↗ ODI 11695572 Shift to park issue. Vehicle shifts into park but does not register as such. Therefore, the vehicle keeps running and will not turn off or allow you to exist the vehicle. This is already a know issue with certain GM vehicles as is evident by a recall and Service Bulletins. However, none of those include the 2020 Chevy Blazer. Look up ODI 11695572 at NHTSA ↗ ODI 11738429 Vehicle: 2020 Chevrolet Blazer Issue: “Shift to Park” malfunction Description: The vehicle repeatedly displays a “Shift to Park” warning message even when the gear selector is fully placed in Park. Because of this issue, the vehicle does not always shut off properly and may continue running electrical systems after the engine is turned off. Symptoms include: * Warning message stating “Shift to Park” * Vehicle not recognizing that it is in Park * Difficulty shutting vehicle off completely * Doors/horn behavior acting abnormally after exiting … Look up ODI 11738429 at NHTSA ↗	2 ODI 11414919 · 8,665 mi REARVIEW CAMERA AND BACK UP CAMERA CONSTANTLY NOT FUNCTIONING AND GOING BLACK WHILE AND MOTION OR BACKING UP. CAR ACTS LIKE THERE IS SOMETHING IN FRONT OF IT (LIKE A WALL) ON CERTAIN ROADS AND DOES NOT WANT TO ACCELERATE TO TURN/PULL OUT FROM A STOPPED POSITION. I HAVE HAD THIS VEHICLE FOR 2 MONTHS. I HAVE HAD A CAR PRIOR TO THIS THAT DID THIS BEFORE AND STOPPED AND LEFT ME STRANDED ON A BUSY ROAD AND CAUSED AN ACCIDENT. I CAN'T BELIEVE THIS CAR IS ACTING LIKE THIS! Look up ODI 11414919 at NHTSA ↗ ODI 11749661 I was driving and steering reduced drive with caution notification and brake assist notification came on and then engine light and the temp gage went to cold and stayed there. My steering stiffened up making it hard to steer. This is a known problem with the Chevy blazers and it had to do with the thermostat needing replaced. Look up ODI 11749661 at NHTSA ↗	—	0	1 ODI 11373091 · 1,300 mi I WAS DRIVING ABOUT 35MPH GOING STRAIGHT WHEN MY CHEVY BLAZER ACTED AS IF IT 'HIT A BRICK WALL' AND CAME TO A COMPLETE STOP. I GOT OUT AND NOTICED MY RIGHT, FRONT WHEEL WAS COMPLETELY SMASHED INTO MY CAR. SOMETHING HAD COME LOOSE INTERNALLY AND LOCKED UP MY WHEEL. IT DAMAGED MY CAR SO BAD WHERE MY SUSPENSION WAS DAMAGED. IT HAD TO BE TOWED. IT WAS NON DRIVABLE. MY VEHICLE ONLY HAD 1300 MILES ON IT. I DECIDED AT LAST MINUTE TO NOT GET ON HIGHWAY. Look up ODI 11373091 at NHTSA ↗
Fuel/Propulsion System	3 ODI 11660419 To Whom It May Concern, I am writing to formally file a complaint regarding ongoing and persistent issues with my 2020 Chevrolet Blazer. The vehicle has exhibited repeated problems that I believe may indicate a broader safety or mechanical defect, and I am requesting that the NHTSA investigate these concerns further. Since purchasing the vehicle, I have experienced the check engine light turning on and off repeatedly, without consistent resolution. The following issues have occurred over time, all seemingly related to the engine or control sy… Look up ODI 11660419 at NHTSA ↗ ODI 11715555 I received a check engine light which i took to Bell tire for diagnosis. Here is there diagnosis Comments: The P01F0 code on a 2020 Chevy Blazer means the engine coolant temperature is below the normal operating range, often due to a stuck-open thermostat (or both thermostats in models with dual units), a faulty Engine Coolant Temperature (ECT) sensor, or low coolant, leading to poor fuel economy and potential wear; fixing it usually involves replacing the thermostat(s) or sensor after checking coolant levels and wiring. After that i took th… Look up ODI 11715555 at NHTSA ↗ ODI 11735381 My car will be running fine but the lights on the AC panel wont work. My car will stop and shut down while driving. Ive taken it in for service and they told me my battery cabels were lose. The second time it happened I got a notification of low battery level and it shut off and will not start. I just replace the battery 2 years ago. The service department tested my battery and said it was fine Look up ODI 11735381 at NHTSA ↗	0	3 ODI 11599228 6/12/2024 In Damon Parking lot in Rochester MN. Going less than 10 miles an hr- cars in front of me and behind me looking for a parking spot. Stop and go at times. Went to turn corner to go from one level to the next and my BLAZER took off "like a bullet". No control over accelerated speed- hit outer cement wall and slammed into 2 parked empty SUVS. Could not go any farther. The 2 SUVs slammed into cement wall in front of them. Injuries to both my passenger and myself. I have no idea what happened - it was so fast- I do know I had no control o… Look up ODI 11599228 at NHTSA ↗ ODI 11660419 To Whom It May Concern, I am writing to formally file a complaint regarding ongoing and persistent issues with my 2020 Chevrolet Blazer. The vehicle has exhibited repeated problems that I believe may indicate a broader safety or mechanical defect, and I am requesting that the NHTSA investigate these concerns further. Since purchasing the vehicle, I have experienced the check engine light turning on and off repeatedly, without consistent resolution. The following issues have occurred over time, all seemingly related to the engine or control sy… Look up ODI 11660419 at NHTSA ↗ ODI 11715555 I received a check engine light which i took to Bell tire for diagnosis. Here is there diagnosis Comments: The P01F0 code on a 2020 Chevy Blazer means the engine coolant temperature is below the normal operating range, often due to a stuck-open thermostat (or both thermostats in models with dual units), a faulty Engine Coolant Temperature (ECT) sensor, or low coolant, leading to poor fuel economy and potential wear; fixing it usually involves replacing the thermostat(s) or sensor after checking coolant levels and wiring. After that i took th… Look up ODI 11715555 at NHTSA ↗	1 ODI 11599228 6/12/2024 In Damon Parking lot in Rochester MN. Going less than 10 miles an hr- cars in front of me and behind me looking for a parking spot. Stop and go at times. Went to turn corner to go from one level to the next and my BLAZER took off "like a bullet". No control over accelerated speed- hit outer cement wall and slammed into 2 parked empty SUVS. Could not go any farther. The 2 SUVs slammed into cement wall in front of them. Injuries to both my passenger and myself. I have no idea what happened - it was so fast- I do know I had no control o… Look up ODI 11599228 at NHTSA ↗	0	0	—	0
Suspension	1 ODI 11710166 Very bad clunnk on driver side when hitting any bump on the road and it's loud.dealer ship sold me the car like that . Electrical issue gauge cluster radio cluster turn signals your first camera anything that works off the instrument cluster of the radio TV screen goes off while I'm driving comes back on hit a bump it comes back on no headlights driving at night time. The dealership sold me the car like this. Look up ODI 11710166 at NHTSA ↗	1 ODI 11627354 Questions Answered Below: What component or system failed or malfunctioned, and is it available for inspection upon request? The vehicle is at a GM Dealership now and is available for inspection. I have not authorized repairs as of yet. I am being told by the dealership: The ball joint on the control arm on the left side seized snapping the axle shaft - causing the tire to to turn out. The dealership has suggested: Mechanical repair costs $1,850, Plus an additional $2,000 due to wheel well damage caused by the failure. Has the problem bee… Look up ODI 11627354 at NHTSA ↗	0	1 ODI 11709700 1) Part that failed per General Motors Chevrolet dealer was the Thermostat along with Coolant Sensor. 2) I was getting warning notices on dash board screen stating (Reduced steering assist) I was also getting a ESC warning 3) Problem has been repaired at GM dealer 4) Parts were replaced by GM dealer/service center 5) ESC warning light that came on for a short time after motor stopped for auto stop / start and then restarted. If auto stop / start was turned off ESC warning did not come on. Reduced steering assist warning would come on but then … Look up ODI 11709700 at NHTSA ↗	1 ODI 11709700 1) Part that failed per General Motors Chevrolet dealer was the Thermostat along with Coolant Sensor. 2) I was getting warning notices on dash board screen stating (Reduced steering assist) I was also getting a ESC warning 3) Problem has been repaired at GM dealer 4) Parts were replaced by GM dealer/service center 5) ESC warning light that came on for a short time after motor stopped for auto stop / start and then restarted. If auto stop / start was turned off ESC warning did not come on. Reduced steering assist warning would come on but then … Look up ODI 11709700 at NHTSA ↗	1 ODI 11373091 · 1,300 mi I WAS DRIVING ABOUT 35MPH GOING STRAIGHT WHEN MY CHEVY BLAZER ACTED AS IF IT 'HIT A BRICK WALL' AND CAME TO A COMPLETE STOP. I GOT OUT AND NOTICED MY RIGHT, FRONT WHEEL WAS COMPLETELY SMASHED INTO MY CAR. SOMETHING HAD COME LOOSE INTERNALLY AND LOCKED UP MY WHEEL. IT DAMAGED MY CAR SO BAD WHERE MY SUSPENSION WAS DAMAGED. IT HAD TO BE TOWED. IT WAS NON DRIVABLE. MY VEHICLE ONLY HAD 1300 MILES ON IT. I DECIDED AT LAST MINUTE TO NOT GET ON HIGHWAY. Look up ODI 11373091 at NHTSA ↗	0	—

Co-reporting does not establish that one component caused another concern.

Recurring narrative patterns

Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.

Search patterns

7 patterns with matching reports.

Steering assistance concerns

64 mentions · 29.2% of complaints

Median mileage: 65,000 mi (1 usable records).

ODI 11500970

Value stem gasket covers need replacing oil spilling out everywhere it’s a 2020 should not be happening Oil leak Hot and cold temperature not working properly A warning flashing for the power steering being deceased and not use That car get moved every hour just about always in jt working or just taking a break The auto shut of makes transmission slip or sounds like it is

Look up ODI 11500970 at NHTSA ↗

ODI 11514633

Look up ODI 11514633 at NHTSA ↗

ODI 11554101

Transmission skips while driving, there’s some sort of glitch with the electrical that causes the steering assist to shut down and the fan to over work, like it would if it were over heating but the temp of normal.

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Matching rule

\b(power steer\w*|steering assist\w*|steering lock\w*|steering wheel lock\w*)\b

Warning lights and dashboard alerts

44 mentions · 20.1% of complaints

Median mileage: 70,000 mi (11 usable records).

ODI 11343879 · 1,500 mi

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ODI 11405620 · 300 mi

Look up ODI 11405620 at NHTSA ↗

ODI 11428872 · 15,000 mi

The contact owns a 2020 Chevrolet Blazer. The contact stated while driving approximately 30 mph, there was an abnormal noise coming from the vehicle. In addition, the check engine warning light was illuminated, and the vehicle failed to operate. The vehicle was towed to the dealer but was not yet diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 15,000.

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Matching rule

\b(warning light\w*|check engine|dashboard warning\w*|malfunction indicator)\b

Stalling or loss of power

7 mentions · 3.2% of complaints

Median mileage: 92,000 mi (1 usable records).

ODI 11490610

Look up ODI 11490610 at NHTSA ↗

ODI 11659014

Look up ODI 11659014 at NHTSA ↗

ODI 11667252 · 92,000 mi

The contact owns a 2020 Chevrolet Blazer. The contact stated while driving approximately 45 MPH, the instrument cluster went black, and the vehicle stalled. The contact stated that there was no warning light illuminated or an audible chime heard. The contact stated that several attempts were needed to restart the vehicle. The vehicle was restarted, and the message "Vehicle in Transport Mode" was displayed. The contact stated that the failure was intermittent but reoccurred. The contact stated that the vehicle was not taken to a dealer or indepe…

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Matching rule

\b(stall\w*|loss of power|lost power|engine shut\w* off)\b

Hard or delayed shifting

6 mentions · 2.7% of complaints

Median mileage: 157,236 mi (1 usable records).

ODI 11692355

I backed my vehicle out of the garage and put it in park and stepped out of the Driver's door. I was going to put my son in his car seat in the rear seat when the vehicle started moving backwards and the opened driver's door knocked us down. I was able to push my son out of the way, but the vehicle continued and the front left tire rolled over both of my legs. The vehicle continued in reverse along the driveway, struck a trash container and went up the incline at the main road. It crossed a busy two lane road and into my neighbors yard. Th…

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ODI 11704538 · 157,236 mi

The contact owns a 2020 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed, the vehicle hesitated with a grinding sound coming from the vehicle, with the check engine warning light illuminated. The contact stated that the vehicle was jerking while driving and while accelerating from a stop. In addition, the contact noticed fuel leaking from the front end of the vehicle while the vehicle was parked at the residence. The vehicle was taken to the dealer, where it was diagnosed that the START/STOP accumulator end cap ha…

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ODI 11705481

Where do I start. Spring of 2024 I believe, less than 55,000 miles, my transmission went out. No warning. I just went out to my vehicle to go to work and when I put it into reverse, my vehicle make a awful noise, jerked forward almost going into my garage door, then wouldn't move.. I put it back in park, tried to put into reverse again and it wouldn't go. It was stuck in park. Had to get it towed to the dealership where they advised me the transmission went out. It was covered under the drivetrain warranty, but the GM warranty doesn't cover ren…

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Matching rule

Battery drain and no-start mentions

2 mentions · 0.9% of complaints

Median mileage: Unavailable (0 usable records).

ODI 11694202

Component/System Involved: The shift-to-park sensor in my 2020 Chevy Blazer is malfunctioning. After shifting into park, the vehicle does not detect it and displays a “Shift to Park” message. The issue is ongoing, and the component is available for inspection if needed. Safety Risk: The vehicle cannot be fully shut off or locked, increasing the risk of battery drain or unintended movement. This poses a safety risk if the vehicle is left in public or on an incline. Inspection History: The vehicle has not been inspected Warning Signs: The “Sh…

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ODI 11738429

Vehicle: 2020 Chevrolet Blazer Issue: “Shift to Park” malfunction Description: The vehicle repeatedly displays a “Shift to Park” warning message even when the gear selector is fully placed in Park. Because of this issue, the vehicle does not always shut off properly and may continue running electrical systems after the engine is turned off. Symptoms include: * Warning message stating “Shift to Park” * Vehicle not recognizing that it is in Park * Difficulty shutting vehicle off completely * Doors/horn behavior acting abnormally after exiting …

Look up ODI 11738429 at NHTSA ↗

Matching rule

Brake response concerns

2 mentions · 0.9% of complaints

Median mileage: 80,000 mi (1 usable records).

ODI 11702406 · 80,000 mi

The contact owns a 2020 Chevrolet Blazer. The contact stated that while attempting to start the vehicle, the brake pedal was depressed, but the pedal was firm, and the contact was unable to start the vehicle. The vehicle was towed to the dealer, where an unknown repair was performed. Additionally, the contact stated that upon taking the vehicle for an oil change, the contact was informed that the service could not be performed because the rear main seal was defective. The vehicle was taken to the dealer, where the contact was informed that the …

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ODI 11764039

The contact owns a 2020 Chevrolet Blazer. The contact stated that while starting the vehicle, the brake pedal became inoperable. There was no warning light illuminated. The contact stated that excessive force was needed to depress the brake pedal to engage the START/STOP function to start the vehicle. The dealer was not contacted. The manufacturer was made aware of the failure by telephone.

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Matching rule

Fuel smell or leak mentions

2 mentions · 0.9% of complaints

Median mileage: 93,518 mi (2 usable records).

ODI 11559855 · 29,800 mi

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ODI 11704538 · 157,236 mi

Look up ODI 11704538 at NHTSA ↗

Matching rule

\b(fuel leak\w*|gas leak\w*|gas(?:oline)? smell|smell\w* (?:of )?(?:fuel|gas))\b