U.S. public vehicle records

2021 Grand Design MOMENTUM problems and owner complaints

Explore the records behind recurring owner reports.

Key facts

57 owner complaints analyzed

4 distinct recall campaigns

11,500 mi median reported failure mileage

Scope: 2021 model year. Data updated: 2026-10-01 (October 1, 2026). 4 complaints include usable failure mileage. View data status.

Owner-reported patterns

Most common problems

Unknown Or Other is the most frequently named component, appearing in 27 of 57 complaints (47.4%). A complaint can name multiple components.

Recurring terms in complaint narratives
Topic	Matching reports	Share of complaints
Braking behavior	4	7.0%
Electrical and battery issues	2	3.5%
Transmission and shifting	1	1.8%

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.

Unknown Or Other

Structure:Body

Suspension

Structure

Latches/Locks/Linkages:Doors:Latch

Structure:Frame And Members

Equipment:Recreational Vehicle/Trailer

Service Brakes

Component breakdown data
Category	Count
Unknown Or Other	27
Structure:Body	24
Suspension	18
Structure	14
Latches/Locks/Linkages:Doors:Latch	9
Structure:Frame And Members	4
Equipment:Recreational Vehicle/Trailer	3
Service Brakes	2

Unknown Or Other: 27; Structure:Body: 24; Suspension: 18; Structure: 14; Latches/Locks/Linkages:Doors:Latch: 9; Structure:Frame And Members: 4; Equipment:Recreational Vehicle/Trailer: 3; Service Brakes: 2

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: 3; 25,000 to 49,999: 1; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0

Under 25,000 miles has the most reports with usable mileage (3). 53 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.

2022

2023

2024

2025

2026

2022: 3; 2023: 3; 2024: 24; 2025: 19; 2026: 8

Pattern summary

Unknown Or Other leads the component reports. Braking behavior appears in 4 complaint narratives. Electrical and battery issues appears in 2 complaint narratives. Transmission and shifting appears in 1 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 11477900 · 2022-08-06 (August 6, 2022)

Bolts holding brake caliper assembly to the axle apparently loosen and fell out while on the highway. This caused the caliper to drop, resting on inner part of the tire rim, leaving approximately half to one quarter of the caliper on the disc. Caliper caused significant gouging on the rim. During braking, the caliper was prevented from spinning during brake application due to it hitting the axle u-bolt retention plate on top of the leaf spring. In the very limited backing, the hydraulic line held back the caliper. Safety issues are the comple…

Owner-reported narrative. Look up ODI 11477900 at NHTSA ↗

Owner report 11593059 · 2024-06-07 (June 7, 2024)

This is an updated report with additional detail. Sorry for any confusion this may have caused. * Baggage door routinely open while travelling. A number of items may have been sucked out of the RV while moving down the road. We try to be hypervigilant and pull over as soon as we notice the door flapping open, and we secure loose items in drawers. * RV doors routinely open. The front door always opens, even though we use the 'deadbolt'. It's usually held in place by a hand rail that folds over the door, but this occassionally comes open, as wel…

Owner-reported narrative. Look up ODI 11593059 at NHTSA ↗

Owner report 11590944 · 2024-05-28 (May 28, 2024)

We are victims of frame failure. First sign was a creaky floor in the bedroom. Screws worked their way out of the wood flooring and pushed up underneath the linoleum. The movement of the nose cap pushed screws out of the trim and seal piece on the underside of the front cap. We reseated screws, upgraded screws, resealed this at least 5 times and now use gorilla tape to avoid water intrusion. The underbelly has fallen down while traveling so we had to reinforce this ourselves. Our driver side bay door will fly open when traveling. It locks but t…

Owner-reported narrative. Look up ODI 11590944 at NHTSA ↗

Owner report 11608146 · 2024-08-13 (August 13, 2024)

The contact owns a 2021 Grand Design Recreational Momentum. The contact stated that while having maintenance work completed on the RV, the dealer removed the nose cap and noticed that the insulation and the mylar tarp near the rear of the RV was burned. The contact was informed that the wiring on the nose cap had been overheating and causing the burn. The dealer had reconnected the wiring but had not repaired the RV. The manufacturer was made aware of the failure. The failure mileage was 40,000.

Owner-reported narrative. 40,000 miles reported. Look up ODI 11608146 at NHTSA ↗

Owner report 11641738 · 2025-02-10 (February 10, 2025)

We started noticing issues on our RV and reported it to Grand Design. Those issues included bolts holding front philon breaking and loosening, wallpaper at base near floor shifting, excessive new noises on slide movement, lippert legs stopping due to being off balance on level ground, stress cracks in front cap, sawdust in pantry cabinet, loose lag bolts upon further inspection and dresser panel repeatedly popping off on travel days. Based on the issues, we took it to a a GD dealer (La Mesa in Sanford FL) for inspection. After measurements I …

Owner-reported narrative. Look up ODI 11641738 at NHTSA ↗

Explore the data

Vehicle analysis explorer

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

Data completeness

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

7.0%Usable mileage4 / 57 records

100.0%Valid incident date57 / 57 records

100.0%Valid filing date57 / 57 records

100.0%Ordered incident and filing dates57 / 57 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	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025
Unknown Or Other	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	240.0% ODI 11589961 front frame failure, yes, trailer is sagging in the front, inspected by insurance co., no warning Look up ODI 11589961 at NHTSA ↗	440.0% ODI 11570836 The frame has failed on our rv it is flexing when being pulled and we are afraid it may fail completely and break free from the pull vehicle. They are calling this frame flex and seems to be common please don't wait until a complete failure happens and people get hurt to address this issue. Look up ODI 11570836 at NHTSA ↗	215.4% ODI 11630779 Based on internet craze of and symptoms of Frame Flex \| Frame Failure on Grand Design Momentum 5th wheels I had my unit measured for Fram Flex by Grand Design at the GD East Coast Rally. According to their measurements at that time I was 1/16 inch away from needing to be concerned regarding frame flex. After the fact in reading Lippert Components Incorporated (LCI) measuring instructions Grand Design did NOT measure my unit per LCI's instructions. After much thought and continued symptoms of frame flex we decided to incur personal expenses an… Look up ODI 11630779 at NHTSA ↗	457.1% ODI 11573756 Structural Frame Failure. We found frame damage at a rest stop while traveling down the interstate. We observed side wall separations and multiple cracks in the welds around the pin box. The 5th wheel trailer was taken to a commercial truck frame repair shop in Florida and after opening up the panel underneath the pin box we discovered multiple breaks/cracks in the structural frame. We filed and insurance claim and an adjuster came out and photo documented all the frame damages along with documenting the overall build construction of the … Look up ODI 11573756 at NHTSA ↗	1066.7% ODI 11205775 · 100 mi WE WERE IN ROUTE TO ASSATEAGUE FOR THE WEEKEND WHEN OUR AWNING SOMEHOW OPENED & DETACHED FROM OUR CAMPER WHILE DRIVING AT HIGHWAY SPEED ON RT 50 IN MARYLAND. I BELIEVE IT FAILED DUE TO BEING BLOWN OPEN BY THE WIND, BUT I AM UNSURE. WHEN IT DETACHED, IT VIOLENTLY FLAILED AROUND DAMAGING THE EXTERIOR OF THE TRAILER. WE WERE ON THE CHESAPEAKE BAY BRIDGE WHEN THE EVENT OCCURRED WITH THE AWNING FLAILING AROUND BY CARS & THE BRIDGE STRUCTURE. AS SOON AS I HEARD THE SOUND, I IMMEDIATELY DROPPED OUR SPEED TO A CRAWL & STARTED LOOKING AROUND AND SAW… Look up ODI 11205775 at NHTSA ↗	1655.2% ODI 11424178 We used the gas water heater on our Rig. Come to find out, it blew the cover off the water heater, burned the wires and melted the case. We are very lucky our rig did not catch fire. Look up ODI 11424178 at NHTSA ↗	2747.4% ODI 11471009 We had a towing incident chain's came detached from camper one side was only tack welded when contacted grand design got no where with them Look up ODI 11471009 at NHTSA ↗	1545.5% ODI 11569843 Frame started to flex excessively in the king-pin area and on the inside, above the king-pin area. Issue was confirmed by independent RV dealer. The movement exceeded Lipperts stated limits for the frame to flex. After consulting with Grand Design and Lippert, instructed to take RV to local Grand Design dealer for further inspection and repair. Dealer found broken welds on the frame, broken bolts attaching side wall to frame, and missing bolts intended to attach wall to frame. After authorization by Grand Design and Lippert, Lippert send r… Look up ODI 11569843 at NHTSA ↗	729.2% ODI 11574151 We have a brand new 2023 Grand Design Momentum 5th wheel. Had her for 9 months. Taken only 2 trips thus far. I have a structural stress fractures on the corner of my closet slide (approx 4”), caulking around the front cap has been pulled away, both sides of our bedroom upper cabinets have about 3” cracks on the bottom along the wall from frame flex / failure. It’s difficult to close our main door. Often times it requires us to slam once or twice to get the door to close. All this is due to frame flex. I have spoken to Grand Design and they a… Look up ODI 11574151 at NHTSA ↗	327.3% ODI 11631188 Our new 2024 Momentum 414M suffered a landing gear failure - while returning to hitch height the passenger side landing gear cylinder housing broke, causing the camper to fall to it's belly. Upon further research, Grand Design has had issues with frames flexing. Also - the hydraulic cylinder mfg has a gen 2 model that has reinforcement where ours failed. Either way the frame is currently twisted. It's unknown if the cylinder housing simply failed and it caused the drop, which caused frame twist, OR if the frame was flexing, put additional s… Look up ODI 11631188 at NHTSA ↗	00.0% No examples available for this selection.
Structure:Body	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	5100.0% ODI 11589961 front frame failure, yes, trailer is sagging in the front, inspected by insurance co., no warning Look up ODI 11589961 at NHTSA ↗	440.0% ODI 11570836 The frame has failed on our rv it is flexing when being pulled and we are afraid it may fail completely and break free from the pull vehicle. They are calling this frame flex and seems to be common please don't wait until a complete failure happens and people get hurt to address this issue. Look up ODI 11570836 at NHTSA ↗	17.7% ODI 11591491 This is a 43 foot fifth wheel RV. The frame near the front of the RV is showing signs of "frame-flex," or frame cracking. The attached pictures illustrate where the walls are shifting and creating wear marks; this is consistent with other RV owners experiences the same problem. This issue could contribute in further frame cracking that may result in significant property damage or even death. I plan to report this issue today to the manufacturer, Grand Design. Look up ODI 11591491 at NHTSA ↗	114.3% ODI 11570026 We have frame failure on our trailer, we have not taken it apart yet to give all the details on the welds broken but metal is starting to come out from the fiberglass, and our cabinets inside came part. We contacted Grand Design and they stated as second owners there is no warranty, we contacted Lippert they said to reach out to GD and our insurance said they do not repair manufacturing issues. We will be taking to a shop at the end of February and will have a better understanding of all the issues. Look up ODI 11570026 at NHTSA ↗	320.0% ODI 11205775 · 100 mi WE WERE IN ROUTE TO ASSATEAGUE FOR THE WEEKEND WHEN OUR AWNING SOMEHOW OPENED & DETACHED FROM OUR CAMPER WHILE DRIVING AT HIGHWAY SPEED ON RT 50 IN MARYLAND. I BELIEVE IT FAILED DUE TO BEING BLOWN OPEN BY THE WIND, BUT I AM UNSURE. WHEN IT DETACHED, IT VIOLENTLY FLAILED AROUND DAMAGING THE EXTERIOR OF THE TRAILER. WE WERE ON THE CHESAPEAKE BAY BRIDGE WHEN THE EVENT OCCURRED WITH THE AWNING FLAILING AROUND BY CARS & THE BRIDGE STRUCTURE. AS SOON AS I HEARD THE SOUND, I IMMEDIATELY DROPPED OUR SPEED TO A CRAWL & STARTED LOOKING AROUND AND SAW… Look up ODI 11205775 at NHTSA ↗	1137.9% ODI 11420475 · 1,000 mi The contact owns a 2020 Grand Design Recreational Momentum. The contact stated that the floor was started buckling and there were bubbles on the flooring of the trailer. The contact stated that one of the bubble was near the front bedroom towards the bathroom, and the other bubble was towards the hallway. The contact took the vehicle to the local dealer however, the mechanic was unable to identify the cause of the failure however, the mechanic was willing to fix the esthetics by sanding the floors and replacing the linoleum. The trailer was rep… Look up ODI 11420475 at NHTSA ↗	2442.1% ODI 11490340 It is a common issue with the Grand Design Momentum G-class travel trailers where the interior floor and possibly the frame are flexing so much that is causes the laminate flooring to lift and separate from the plywood underneath. Bubbles in my laminate flooring were found during our initial walk through when our trailer was purchased, I was lead to believe that it was just a simple adhesive issue, but have since found from research that this is a common issue with all the g-class trailers. Many people on the Grand Design facebook pages have ex… Look up ODI 11490340 at NHTSA ↗	1339.4% ODI 11569843 Frame started to flex excessively in the king-pin area and on the inside, above the king-pin area. Issue was confirmed by independent RV dealer. The movement exceeded Lipperts stated limits for the frame to flex. After consulting with Grand Design and Lippert, instructed to take RV to local Grand Design dealer for further inspection and repair. Dealer found broken welds on the frame, broken bolts attaching side wall to frame, and missing bolts intended to attach wall to frame. After authorization by Grand Design and Lippert, Lippert send r… Look up ODI 11569843 at NHTSA ↗	937.5% ODI 11574151 We have a brand new 2023 Grand Design Momentum 5th wheel. Had her for 9 months. Taken only 2 trips thus far. I have a structural stress fractures on the corner of my closet slide (approx 4”), caulking around the front cap has been pulled away, both sides of our bedroom upper cabinets have about 3” cracks on the bottom along the wall from frame flex / failure. It’s difficult to close our main door. Often times it requires us to slam once or twice to get the door to close. All this is due to frame flex. I have spoken to Grand Design and they a… Look up ODI 11574151 at NHTSA ↗	00.0% No examples available for this selection.	00.0% No examples available for this selection.
Structure	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	110.0% ODI 11645284 Frame tore/broke at welds where upper deck(living room) attaches to frame. Fiberglass on exterior tore as a result. Look up ODI 11645284 at NHTSA ↗	215.4% ODI 11608008 The contact owns a 2017 Grand Design Momentum RV. The contact stated that the exterior storage doors failed to close properly. The contact stated that the generator doors almost detached, and the front rubber trim hold was detaching. The RV was towed to the dealer, where several repairs were performed; however, the frame continued to fracture. The dealer advised the contact to park the RV. The RV was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was unknown. Look up ODI 11608008 at NHTSA ↗	571.4% ODI 11573756 Structural Frame Failure. We found frame damage at a rest stop while traveling down the interstate. We observed side wall separations and multiple cracks in the welds around the pin box. The 5th wheel trailer was taken to a commercial truck frame repair shop in Florida and after opening up the panel underneath the pin box we discovered multiple breaks/cracks in the structural frame. We filed and insurance claim and an adjuster came out and photo documented all the frame damages along with documenting the overall build construction of the … Look up ODI 11573756 at NHTSA ↗	533.3% ODI 11570899 Broken frame where the pin box is the hitch part that connects to the truck very very unsafe Look up ODI 11570899 at NHTSA ↗	827.6% ODI 11605321 Excess frame flex. Contacted Grand Design, they scheduled an inspection and then preformed followup repairs. New bracing and support were added by Grand Design. Look up ODI 11605321 at NHTSA ↗	1424.6% ODI 11573633 Frame Failure: Welds broke, and walls separated. The dealer and manufacturer acknowledged the issue and repaired the issue. Look up ODI 11573633 at NHTSA ↗	1236.4% ODI 11588407 · 700 mi The contact owns a 2022 Grand Design Momentum. The contact stated that the RV was purchased brand new and taken to the residence, where the contact noticed that the front driver's side nose had detached at the fifth wheel pin location. The RV was taken to the dealer, where it was repaired; however, the failure recurred while the RV was still at the dealer. The RV was repaired. Additionally, the contact stated that the sliding doors were not opening and closing properly due to the frame flexing. The contact stated that the suspension was fractur… Look up ODI 11588407 at NHTSA ↗	833.3% ODI 11606828 I was made aware of Grand Design’s Technical Service Bulletin 24-001 concerning issues with undersized and/or missing lag screws possibly be on some models of their fifth wheel campers. I was able to determine that our Momentum 381MS had the undersized 3/8” lag screws used in the construction of our camper. I made an appointment with Campers Inn in Jeffersonville, IN and took it in. I was notified by them on 8-5-24 that there were also 4 missing lag screws. They also told me there were broken welds on the frame. I went there on 8-6-24 and took … Look up ODI 11606828 at NHTSA ↗	327.3% ODI 11631188 Our new 2024 Momentum 414M suffered a landing gear failure - while returning to hitch height the passenger side landing gear cylinder housing broke, causing the camper to fall to it's belly. Upon further research, Grand Design has had issues with frames flexing. Also - the hydraulic cylinder mfg has a gen 2 model that has reinforcement where ours failed. Either way the frame is currently twisted. It's unknown if the cylinder housing simply failed and it caused the drop, which caused frame twist, OR if the frame was flexing, put additional s… Look up ODI 11631188 at NHTSA ↗	00.0% No examples available for this selection.
Suspension	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	240.0% ODI 11589961 front frame failure, yes, trailer is sagging in the front, inspected by insurance co., no warning Look up ODI 11589961 at NHTSA ↗	110.0% ODI 11679251 The front left slide stopped working 3 weeks ago. Something appeared to be wrong with the wall but I was not sure. Yesterday I noticed the front left portion of the frame was flexing a significant amount. I started inspecting the frame and I am seeing broken welds Look up ODI 11679251 at NHTSA ↗	17.7% ODI 11115609 · 11,000 mi LEAF SPRINGS BROKEN, CUTTING WIRE TO ELECTRIC TRAILER BRAKES. TWO LEAF SPRING FAILURES, ONE AT 11 MONTHS SINCE PURCHASE, SECOND FAILURE AT 13 MONTHS. BOTH FAILURES WHILE MOVING. Look up ODI 11115609 at NHTSA ↗	342.9% ODI 11578001 Fifth wheel pin box busted loose weld failed trailer about came off the truck this trailer weighs 16,000 plus pounds it was very unsafe the manufacturer knows of this issue The RV started to rip itself apart leave spring shackles busted Look up ODI 11578001 at NHTSA ↗	213.3% ODI 11579614 my suspension failed with the leaf springs breaking and the shackles and bushings failed then the frame is breaking( flexing). all fasteners were loose and some missing the body came loose from the frame... this is a issue with many other grand design 5th wheels ... hopefully the parts that fell off on the freeway did not hurt anyone... ( leaf springs) Look up ODI 11579614 at NHTSA ↗	827.6% ODI 11472574 BROKEN WELDS IN THE FRAME IN 5 DIFFERENT PLACES. The dealership in Grand Junction Colorado has told us the rig is to unsafe to tow it off their lot. The dealership in Grand Junction Colorado are the ones that diagnosed the broken welds in the frame. The RV has not been inspected by the manufacturer. Manufacturer has only asked more questions and asked for additional photos. We walked into the RV and noticed that the cabinets had moved and the trim was hanging down. We first noticed this on June 5th. Called the dealership on June 7th to make a… Look up ODI 11472574 at NHTSA ↗	1831.6% ODI 11540112 Left rear wet bolt sheared mid-bolt at the hole where the grease comes out to grease the sleeve in the spring eye. Spring was sliding side to side, causing the shackle hanger to bend and the spring to detach from the shackle. I have Summo springs on the trailer, and the one on the left rear took the weight of the trailer, and may have prevented further issue's. This occurred on the freeway at approximately 65 mph. Safety concern would be uncontrolled axle due to the spring holding the axle not being attached to the frame, and possible uncontr… Look up ODI 11540112 at NHTSA ↗	1339.4% ODI 11569843 Frame started to flex excessively in the king-pin area and on the inside, above the king-pin area. Issue was confirmed by independent RV dealer. The movement exceeded Lipperts stated limits for the frame to flex. After consulting with Grand Design and Lippert, instructed to take RV to local Grand Design dealer for further inspection and repair. Dealer found broken welds on the frame, broken bolts attaching side wall to frame, and missing bolts intended to attach wall to frame. After authorization by Grand Design and Lippert, Lippert send r… Look up ODI 11569843 at NHTSA ↗	416.7% ODI 11591178 The dealership has declared frame failure and failure of the pin box flexing up to 3-4 inches just picking it up with a forklift. Lag bolts are missing and/or backed out. Dealer has deemed it not safe for use. They will not move it out of their bay. Fist signs were wall separation throughout the RV. Doors not closing because door opening was out of square. Floor squeaking in multiple location. Center Island moves and squeaking. Abnormal wear on middle axle tires. Unusual pop from passenger level leg that shakes the rig. Excessive creaking under… Look up ODI 11591178 at NHTSA ↗	218.2% ODI 11604744 Axles were supposedly installed backwards. Suspension is not installed square under the frame and rv bounces violently behind truck. Storage doors have come open while in transit. Look up ODI 11604744 at NHTSA ↗	150.0% ODI 11731685 In early November 2025, while towing our 2024 Grand Design Momentum 344M M-Class fifth wheel toy hauler to a family Thanksgiving gathering, the rearmost driver-side leaf spring fractured and failed during travel. The trailer was towed by a 2024 Ram 3500 dually, properly rated for this unit, operated within all load ratings, and driven at normal cautious speeds at the time of failure. The failure rendered the trailer immobile and unsafe to move. It has remained in storage since the incident because the damaged suspension cannot support safe relo… Look up ODI 11731685 at NHTSA ↗
Latches/Locks/Linkages:Doors:Latch	0Unavailable No examples available for this selection.	0Unavailable 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.	228.6% ODI 11654890 I started noticing rub marks on the interior walls next to the night stands after the last few uses, and they appear to be getting worse after each use. I was made aware of the deck/frame flex issues the some GD fifth wheels are having and was referred to TSB 24-001. My RV is experiencing the exact concern described in the TSB. I opened a case number with GD, and took the RV to an authorized repair center. The repair center took measurements and confirmed my deck flex concern with GD and recommended a complete replacement/repair of the struct… Look up ODI 11654890 at NHTSA ↗	213.3% ODI 11628648 The contact owns a 2019 Grand Design RV. The contact stated while driving at an undisclosed speed, the RV the front and rear doors inadvertently opened. The RV was taken to the dealer but was not diagnosed; however, the dealer informed the contact that the doors had been repaired. The contact stated while driving at an undisclosed speed, the rear tires blew out. There was no warning light illuminated. The contact pulled over the RV and noticed that the rear axle had fractured. The dealer was contacted. The RV was not diagnosed or repaired. The … Look up ODI 11628648 at NHTSA ↗	310.3% ODI 11630639 On walk through rear awning flew off in slight breeze, took 4 years to get repaired with covid and parts availability, could have just as easily came off on the road, had two 3/4'' screws holding it on and into skin, not frame. Upon looking at bedroom night tables gap at front cap found rub marks on wallcovering and sawdust from rubbing/flexing cabinets from perceived frame flex. back garage man door would open by itself while traveling if deadbolt not used , front man door sticks and screen door has to be opened separately with considerable fo… Look up ODI 11630639 at NHTSA ↗	915.8% ODI 11636185 Side compartments opening while towing unit on highway…items in compartment flying out …hatches won’t closed properly to much gap…big gap also on top cap where it connects to wall in front..unit taken to lazdays Tampa for frame flex recall…inspection revealed major cracks in frame everywhere as a result causing major frame flex…lots of welding is being done…by grand design mechanic ..slide system also damaged as a result of frame flex …unit is currently still at lazdays Tampa being welded together…they keep finding more and more damage …. You … Look up ODI 11636185 at NHTSA ↗	39.1% ODI 11637760 I am having the frame flex issues as well as others. I’m not getting anywhere with grand design. The doors come open when traveling if not strapped from the inside. Pin box on the hitch moves excessively, interior panels are moving in the front, middle and rear of the trailer. Look up ODI 11637760 at NHTSA ↗	416.7% ODI 11599517 On this RV the back man door will not close/latch. We have to use a bungy cord to keep it closed. The latch on the door doesn't catch on the wall catch plate. Look up ODI 11599517 at NHTSA ↗	00.0% No examples available for this selection.	00.0% No examples available for this selection.
Service Brakes	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	440.0% ODI 10897440 · 2,500 mi AFTER READING ON THE GRAND DESIGN OWNERS FORUM ABOUT LEAKING GREASE SEALS ON THE WHEELS, I DECIDED TO DO AN INSPECTION OF MY BRAKES. I HAVE PUT ONLY 500 MILES ON MY TRAILER SINCE TAKING DELIVERY ON JUNE 8, 2016. I ASSUME THAT THE TRAILER WAS DELIVERED TO OREGON BY TOWING IT FROM THE FACTORY. I REMOVED THE RIGHT FRONT BRAKE DRUM AND SURE ENOUGH FOUND A FAILED GREASE SEAL AND GLOBS OF WHEEL BEARING GREASE ON THE DRUM, BRAKE SHOES AND MAGNET. Look up ODI 10897440 at NHTSA ↗	753.8% ODI 10914048 · 1,300 mi A KNOWN PROBLEM ON MANY GRAND DESIGN UNITS, TOLD BY BOTH THE MANUFACTURER AND THE DEALER THAT PROBLEM HAS BEEN FIXED, AND THAT UPON DELIVERY, THE BRAKES ON MY NEW UNIT, DELIVERED ON 09/23/16, WERE CHECKED OUT, AND GREASE FREE. UPON ARRIVING AT MY HOME, ONE WEEK LATER, BRAKES ARE COVERED WITH GREASE AND MY RV SERVICE REPAIR CENTER SAID THE UNIT NEVER SHOULD HAVE BEEN DRIVEN AS IT IS UNSAFE. I AWAIT GRAND DESIGN'S RESPONSE, PHOTOS HAVE BEEN TAKEN, BUT AFTER REVIEWING ALL THE GREASED BRAKE COMPLAINTS ON THE GRAND DESIGN OWNERS FORUM, I DECIDED… Look up ODI 10914048 at NHTSA ↗	00.0% No examples available for this selection.	00.0% No examples available for this selection.	13.4% ODI 11665612 Issues with: - original drum breaks failed due to incorrect wiring, requiring 100% assembly replacement. - front wall separation - trim and cabinets moving and separating from walls - missing and broken lag bolts - front weather stripping separated from front cap - excessive sawdust under cabinets after any travel - wallpaper wear showing excessive movement of front bed overhead cabinets during travel - floor joists separating from upper floor - slides opening during travel - leaf spring hangers bending and twisting, and breaking off - spare … Look up ODI 11665612 at NHTSA ↗	23.5% ODI 11477900 Bolts holding brake caliper assembly to the axle apparently loosen and fell out while on the highway. This caused the caliper to drop, resting on inner part of the tire rim, leaving approximately half to one quarter of the caliper on the disc. Caliper caused significant gouging on the rim. During braking, the caliper was prevented from spinning during brake application due to it hitting the axle u-bolt retention plate on top of the leaf spring. In the very limited backing, the hydraulic line held back the caliper. Safety issues are the comple… Look up ODI 11477900 at NHTSA ↗	26.1% ODI 11631546 Multiple systems failed on this unit. Trailer Brake failure, The rear trailer brake wires were discovered to be severed inside the wheel drum from the factory. For the first year of use they were inoperable. This was suspected and confirmed with a thermal camera. The tow vehicle also alarmed “Check trailer brakes” while driving. A dealer inspected them and found the wires severed. This was repaired. Suspension failure, the rear driver side leaf spring broke on a paved highway 9 months after purchase. Pulled over immediately to inspect the is… Look up ODI 11631546 at NHTSA ↗	14.2% ODI 11627735 · 20,000 mi The contact owns a 2023 Grand Design Momentum hauled by a 2022 Ford F-450. The contact stated that while driving uphill at 65 MPH and depressing the brake pedal, the trailer brakes failed to respond as needed. The contact pulled over onto the side of the highway and was able to bring the trailer to a complete stop. No warning lights were illuminated. The trailer was taken to a local dealer and was inspected. The contact was advised that the trailer no longer had brake pads. The trailer was not repaired. The manufacturer was notified of the fail… Look up ODI 11627735 at NHTSA ↗	218.2% ODI 11635915 I noticed a grinding noise coming from the left front wheel of my Grand Design Momentum. Concerned, I brought it to the dealership the following week for inspection. Upon examination, they discovered that the bolts securing the brake calipers were entirely missing from the system, with no traces of the bolts found in the wheel assembly. As a result, the calipers had come loose and were grinding against both the wheel hub and the rim. This issue presented a significant safety hazard. According to the dealership, the situation could have escalate… Look up ODI 11635915 at NHTSA ↗	150.0% ODI 11671014 Sudden loss of trailer brakes nearly caused me to rear end vehicle in front of me. The more concerning part is when I went to an RV dealer to disgnose, they pulled the break away emergency brake to test if brakes applied. They did not apply, however about 1 minute after the breakway was pulled the switch began to melt, then almost immediately there was smoke coming from inside the battery compartment and a fire was started by the power wires melting due to a short. The fire then damaged a hydralic line and hydralic fluid was leaking rig… Look up ODI 11671014 at NHTSA ↗
Electrical System	0Unavailable No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	17.7% ODI 10971735 THE WIRING FOR THE ELECTRIC TRAILER BRAKES ARE NOT IN ANY PROTECTIVE COVER AND ARE IN DIRECT CONTACT WITH THE SUSPENSION, FREE TO MOVE AND CHAFE. WHEN ANY OF THE 12 VOLT POWER WIRES RUBS THROUGH AND THE BRAKES ARE APPLIED IT WILL CREATE A DEAD SHORT, BLOWING THE FUSE IN THE TOW VEHICLE AND LEAVING THE DRIVER WITH A 15,500 POUND TRAILER WITH NO BRAKES TO AID IN STOPPING. THE ATTACHED PICTURES ARE OF THE DRIVERS SIDE. Look up ODI 10971735 at NHTSA ↗	00.0% No examples available for this selection.	320.0% ODI 11205775 · 100 mi WE WERE IN ROUTE TO ASSATEAGUE FOR THE WEEKEND WHEN OUR AWNING SOMEHOW OPENED & DETACHED FROM OUR CAMPER WHILE DRIVING AT HIGHWAY SPEED ON RT 50 IN MARYLAND. I BELIEVE IT FAILED DUE TO BEING BLOWN OPEN BY THE WIND, BUT I AM UNSURE. WHEN IT DETACHED, IT VIOLENTLY FLAILED AROUND DAMAGING THE EXTERIOR OF THE TRAILER. WE WERE ON THE CHESAPEAKE BAY BRIDGE WHEN THE EVENT OCCURRED WITH THE AWNING FLAILING AROUND BY CARS & THE BRIDGE STRUCTURE. AS SOON AS I HEARD THE SOUND, I IMMEDIATELY DROPPED OUR SPEED TO A CRAWL & STARTED LOOKING AROUND AND SAW… Look up ODI 11205775 at NHTSA ↗	13.4% ODI 11702463 · 12,000 mi The contact owns a 2020 Grand Design Momentum RV. The contact stated that while the RV was parked, the contact heard an abnormally loud popping sound coming from behind the sleeping cabinets at the camping ground. The contact performed an inspection and noticed that the 110-volt electrical wires in the RV had shifted during travel and were touching the subframe of the RV. The contact noticed smoke coming from underneath the RV, and the refrigerator circuit braker then tripped. No warning lights were illuminated. The RV was taken to the dealer, … Look up ODI 11702463 at NHTSA ↗	11.8% ODI 11608146 · 40,000 mi The contact owns a 2021 Grand Design Recreational Momentum. The contact stated that while having maintenance work completed on the RV, the dealer removed the nose cap and noticed that the insulation and the mylar tarp near the rear of the RV was burned. The contact was informed that the wiring on the nose cap had been overheating and causing the burn. The dealer had reconnected the wiring but had not repaired the RV. The manufacturer was made aware of the failure. The failure mileage was 40,000. Look up ODI 11608146 at NHTSA ↗	00.0% No examples available for this selection.	416.7% ODI 11633961 We are showing many signs of excessive frame flex/failure in our 2023 Grand Design Momentum 397THS. Our baggage/storage doors do not properly fit nor lock. The RV was in the shop from Jan-May 2023 to address this. Had the doors replaced and resealed. They still are not flush with the RV, still barely latch, and have popped open while driving. While in the shop, they addressed but "could not duplicate" the underbelly continuously filling with water when it rains. Excessive amounts of water that saturate all of the insulation-- causing us to dr… Look up ODI 11633961 at NHTSA ↗	19.1% ODI 11695084 · 2,700 mi The contact owns a 2024 Grand Design Recreational Momentum. The contact stated that after the RV was delivered, the brakes were inoperable, a slice was cut in the wiring harness with electrical tape covering the cut, the slide-out frame was out of alignment and unable to close properly, the awning had detached, and ABS was not equipped in the RV. Additionally, there was water intrusion in the RV, resulting in mold. A mobile independent mechanic replaced the brakes and wiring harness; however, the RV was not repaired. The manufacturer was made a… Look up ODI 11695084 at NHTSA ↗	00.0% No examples available for this selection.
Structure:Frame And Members	0Unavailable No examples available for this selection.	0Unavailable 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.	16.7% ODI 11698500 · 30,000 mi The contact owns a 2019 Grand Design Momentum 49M hitched to a 2017 Ford F-350. The contact stated that while the RV was parked, the driver’s side bedroom slide-out failed to extend as intended. The RV was taken to a dealer, where the failure was linked to frame flex. The contact was informed that there were four cracks in the frame of the RV. The RV was not diagnosed. The contact stated that the manufacturer was notified of the failure. The failure mileage was approximately 30,000. The VIN was not available. Look up ODI 11698500 at NHTSA ↗	00.0% No examples available for this selection.	47.0% ODI 11570784 The contact owns a 2021 Grand Design Momentum 397 Fifth Wheel. The contact stated that there were tears in the metal of the subframe. While driving at unknown speeds, the RV was bouncy. After connecting to a truck and towing the truck, the RV became unsteady. The local dealer was not contacted. The RV was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the frame manufacturer. The contact called the Lippert manufacturer and was informed about measuring the distance of the subframe. The failure mileage was un… Look up ODI 11570784 at NHTSA ↗	412.1% ODI 11570092 VIN: [XXX] 2022 Grand Design Momentum 395ms has frame failure and welds are breaking, cabinets slowly dislodging from interior walls. Also, not in my case yet but many have their pin boxes coming loose while driving down U.S. roadways. This is a danger to owners and others on the road if they finally break. Grand Design's Service Response Team came out to verify our frame failure and said it is just within tolerance but it is happening and that we needed to take it back to Grand Design to get it repaired as soon as possible. I have an [XXX] … Look up ODI 11570092 at NHTSA ↗	28.3% ODI 11698582 The contact owns a 2023 Grand Design Momentum. The contact stated that the trailer was shifting on the frame. The contact stated that the welds, bolts, and frame were fractured, and while driving, the frame flexed unexpectedly. The trailer was taken to the local dealer, but the diagnosis was not provided. The trailer was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was unknown. Look up ODI 11698582 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
Suspension	Too few reports for a range	8,000 mi	1 (sparse)	ODI 11681297 · 8,000 mi The contact owns a 2021 Grand Design Momentum. The contact stated that while the trailer was parked, the contact became aware that the axle on the trailer had become inoperable. The contact stated that the axle springs had detached, and the I-beam frame of the trailer was bent. The trailer was taken to an independent mechanic, where it was diagnosed and determined that the axle springs and the frame had failed and needed to be replaced. The trailer was not repaired. The dealer was contacted; however, the trailer was not diagnosed or repaired. T… Look up ODI 11681297 at NHTSA ↗
Structure	Too few reports for a range	6,000 mi	1 (sparse)	ODI 11684821 · 6,000 mi The contact owns a 2021 Grand Design Momentum RV. The contact stated while the RV was parked and occupied, or while driving the RV, there was an abnormal popping and creaking sound coming from the frame of the RV while depressing accelerator pedal or depressing the brake pedal. Neither a dealer nor an independent mechanic was contacted. The contact stated that while driving the RV at an undisclosed speed, the doors opened independently. Additionally, while walking inside the RV, there was an abnormal sound coming from the floorboards. The conta… Look up ODI 11684821 at NHTSA ↗
Latches/Locks/Linkages:Doors:Latch	Too few reports for a range	10,500 mi	2 (sparse)	ODI 11684821 · 6,000 mi The contact owns a 2021 Grand Design Momentum RV. The contact stated while the RV was parked and occupied, or while driving the RV, there was an abnormal popping and creaking sound coming from the frame of the RV while depressing accelerator pedal or depressing the brake pedal. Neither a dealer nor an independent mechanic was contacted. The contact stated that while driving the RV at an undisclosed speed, the doors opened independently. Additionally, while walking inside the RV, there was an abnormal sound coming from the floorboards. The conta… Look up ODI 11684821 at NHTSA ↗ ODI 11696350 · 15,000 mi The contact owns a 2021 Grand Design Recreational Momentum RV. The contact stated while driving 55 MPH, the RV frame flexed. The contact stated that when the RV was loaded, the failure persisted. The contact stated that the screws to the bedroom slide out were detaching. Neither an RV dealer nor an independent mechanic was contacted. The vehicle was not taken to a dealer or an independent mechanic to be diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact to bring the RV to a technician … Look up ODI 11696350 at NHTSA ↗
Structure:Frame And Members	Too few reports for a range	11,500 mi	2 (sparse)	ODI 11681297 · 8,000 mi The contact owns a 2021 Grand Design Momentum. The contact stated that while the trailer was parked, the contact became aware that the axle on the trailer had become inoperable. The contact stated that the axle springs had detached, and the I-beam frame of the trailer was bent. The trailer was taken to an independent mechanic, where it was diagnosed and determined that the axle springs and the frame had failed and needed to be replaced. The trailer was not repaired. The dealer was contacted; however, the trailer was not diagnosed or repaired. T… Look up ODI 11681297 at NHTSA ↗ ODI 11696350 · 15,000 mi The contact owns a 2021 Grand Design Recreational Momentum RV. The contact stated while driving 55 MPH, the RV frame flexed. The contact stated that when the RV was loaded, the failure persisted. The contact stated that the screws to the bedroom slide out were detaching. Neither an RV dealer nor an independent mechanic was contacted. The vehicle was not taken to a dealer or an independent mechanic to be diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact to bring the RV to a technician … Look up ODI 11696350 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	3	None	ODI 11623904 I had noticed the Pin Box flexing, especially over bumps or any rough road or bridge approach. As it got worse I could tell we a lot of flex in the frame area where the Pin Box is located. I contacted the dealer and they examined our RV and determined the frame was flexing due to the bolts connecting the chassis to the actual frame of the RV body being to small and working loose/broke. The dealer replaced the bolts with larger bolts and advised the flex is now within specifications. It is better but it's not great by any means. I'm concer… Look up ODI 11623904 at NHTSA ↗ ODI 11627216 The frame and suspension on our 2021 Grand Design is failing. The frame on the upper deck has broken welds and there is visible movement in the upper deck when hitching and unhitching. The furniture inside the main bedroom move when hitching and unhitching. The side walls have started to detach from the frame as evidenced by screws backing out or breaking. The suspension has bent components. The frame is also bending in the right front. The hitch visibly moves into the upper deck when hitching. Look up ODI 11627216 at NHTSA ↗ ODI 11628105 Due to excessive frame flex, multiple welds have broken and the trailer walls are coming apart from the main frame. Vehicle is currently in for repair, but if the hitch had broken while towing, or if the walls had completely separated while towing, the result would have been a serious, and potentially fatal, accident. Look up ODI 11628105 at NHTSA ↗
2024-12	2	None	ODI 11632960 I own a 2021 Grand Design Momentum 381m. In august of this year we found broken welds and bolts in our RV frame. The dealer we took it to told us grand design has known about the issue for several years but refuses to issue a recall, instead they issued a service bulletin. GD told us on the phone, there have been no catastrophic failures yet, so there is no need for a recall. Blue Compass RV in Prescott, AZ, at the direction of GD, welded the frame and told us it was good to drive back home to Florida. Once back in FL, we took the RV to the dea… Look up ODI 11632960 at NHTSA ↗ ODI 11633267 I am experiencing major frame failure. My propane doors on both sides have opened while towing. Gotten so bad i had to duct tape them shut. Not safe pulling over to do this. The main cause of this happening is Frame Flexing which i can confirm with a video i took. I can also see my frame flexing while hitching and unhitching trailer. My top floors are squeaking badly which is indicative to my frame bending and breaking welds. Doing research I have seen pictures of other trailers the same year with broken and cracked frames. This poses a safety… Look up ODI 11633267 at NHTSA ↗
2025-01	3	None	ODI 11636185 Side compartments opening while towing unit on highway…items in compartment flying out …hatches won’t closed properly to much gap…big gap also on top cap where it connects to wall in front..unit taken to lazdays Tampa for frame flex recall…inspection revealed major cracks in frame everywhere as a result causing major frame flex…lots of welding is being done…by grand design mechanic ..slide system also damaged as a result of frame flex …unit is currently still at lazdays Tampa being welded together…they keep finding more and more damage …. You … Look up ODI 11636185 at NHTSA ↗ ODI 11636284 Excessive frame flex in pin box area of fifth wheel. Forward left cargo door unlatching while towing. Vehicle is currently at Lazydays dealer in TN for inspection and TSB for excessive frame flex. Inspection has revealed major structural cracks and structural failure in upper deck steel frame structure. Vehicle has been deemed unsafe to transport and must be repaired in place or partially repaired for transport to factory. We noticed excessive deformation of the pin box and substantial rubbing of internal cabinets, etc upon return from a r… Look up ODI 11636284 at NHTSA ↗ ODI 11637724 Our 5th wheel had broken welds on the drivers side of frame in early 2023 that were repaired at the factory. There is now a service bulletin for a lag bolt inspection, we brought it to a dealership for inspection and it was determined many lag bolts are either missing or broken which means our side walls have been probably attached to the frame. It was also discovered the the frame is flexing outside of the acceptable parameters and there are cracked welds now in the passenger side. We were told it is unsafe to move the 5th wheel at this time. … Look up ODI 11637724 at NHTSA ↗
2025-02	4	None	ODI 11641264 After a trip we noticed that when we had the rv connected to the truck, the front closet would not close. There was also cracking on the nose cover of the rv. We (my wife and I) had a problem with the cargo doors and entry doors coming open on other trips and lost stuff on the highway so we talked to the rv dealer to get a frame inspection. what was found was that the frame was broke in a few places and the door side wall of the camper was not attached. We have also had the rear spring hanger break the year before while driving almost pulling m… Look up ODI 11641264 at NHTSA ↗ ODI 11641333 Main doors coming open - currently bungee cording , cargo doors coming open - currently bungee cording, slides coming out a couple inches, leaf spring broke during travel on interstate, open case with Grand Design since January 22, 2023, case # 00621051 and Grand Design has not been helpful in addressing these issues. An RV tech confirmed frame flex symptoms: sawdust from nose of rv in interior, furniture rubbing on walls moving bac and forth, broken cabinets coming out of ceiling, missing screws. Look up ODI 11641333 at NHTSA ↗ ODI 11641738 We started noticing issues on our RV and reported it to Grand Design. Those issues included bolts holding front philon breaking and loosening, wallpaper at base near floor shifting, excessive new noises on slide movement, lippert legs stopping due to being off balance on level ground, stress cracks in front cap, sawdust in pantry cabinet, loose lag bolts upon further inspection and dresser panel repeatedly popping off on travel days. Based on the issues, we took it to a a GD dealer (La Mesa in Sanford FL) for inspection. After measurements I … Look up ODI 11641738 at NHTSA ↗
2025-03	0	None	No examples available for this selection.
2025-04	1	None	ODI 11655841 Excessive frame flexing/failure in the upper deck of our 5th wheel.discovered damage is 1. Sawdust on furniture in the bedroom and by entry door from living area to the garage at intersection of wall and floor. 2. Furniture rub marks on wall in bedroom from upper cabinets with driver side having bowed out base or molding where it sits on window valance. 3. Separation of night stands from wall in bedroom on both sides and a curved wall in front. 4. Squeaky floor in bedroom on drivers side between bed and closet 5. Wrinkles and separation from s… Look up ODI 11655841 at NHTSA ↗
2025-05	1	None	ODI 11659949 We took possession of our new 2021 Grand Design 381M fifth-wheel travel trailer in April 2021. During 2021 and 2022, the trailer saw minimal road use. However, during our travels, we observed significant movement within the trailer, and on several occasions, the cargo bay doors opened while in transit. In August, we contacted Grand Design due to visible interior damage and abnormal movement. They arranged to pick up the trailer and transport it to their facility for inspection and repair. Grand Design confirmed that the trailer had suffered a… Look up ODI 11659949 at NHTSA ↗
2025-06	2	None	ODI 11664700 FRAME FAILURE AND STRUCTURE. CARGO DOOR OPENED WHILE TRAVELING. (SAFETY ISSUE) FURNITURE SEPARATING FROM STRUCTURE. BROKEN OVERHEAD CABINETS OVER BED (SAFETY ISSUE) WALL SEPARATING FROM FLOOR IN CARGO AREA WOOD DUSTING FROM CEILING IN BEDROOM AND GARAGE AREA. Look up ODI 11664700 at NHTSA ↗ ODI 11664720 We purchased our 2021 Grand Design 395M Momentum new in early 2021. Over the past year we noticed cabinets on the passenger side bedroom separating from there wood frames. We initially repaired the cabinets ourselves thinking it was just poor workmanship. This last trip from Houston to Myrtle Beach the cabinets again separated. Someone in the campground at Myrtle Beach informed us about the issue with Grand Design's frames. Upon closer inspection I noticed that the bottom of the cap had separated approximately 1" and when you lower the unit… Look up ODI 11664720 at NHTSA ↗
2025-07	1	None	ODI 11671713 Frame failure 2 inches of deflection Doors popped open on hwy walls cracked lag bolts falling out water leaks and floor rotting out from flex Look up ODI 11671713 at NHTSA ↗
2025-08	3	None	ODI 11680513 I am experiencing symptoms, consistent with excessive frame movement and structural failure in my 42 foot fifth wheel toy hauler RV. We have been monitoring this for the time we have owned it just over six weeks and have noticed an increase and symptoms that research shows indicate there is a problem.. we are seeking professional inspection and guidance to establish the scope of it and hopefully catching it at the earlier side in order to hopefully deal with the issue easier than after a total failure. The symptoms include 1- the interior upp… Look up ODI 11680513 at NHTSA ↗ ODI 11681297 · 8,000 mi The contact owns a 2021 Grand Design Momentum. The contact stated that while the trailer was parked, the contact became aware that the axle on the trailer had become inoperable. The contact stated that the axle springs had detached, and the I-beam frame of the trailer was bent. The trailer was taken to an independent mechanic, where it was diagnosed and determined that the axle springs and the frame had failed and needed to be replaced. The trailer was not repaired. The dealer was contacted; however, the trailer was not diagnosed or repaired. T… Look up ODI 11681297 at NHTSA ↗ ODI 11681767 The contact owns a 2021 Grand Design Momentum RV. The contact stated that the RV had experienced a failure with the frame, causing the RV to become unstable while being hauled. Additionally, the frame was positioned on the pin box inside the unit, and the lag bolts and screws loosened, causing damage to the interior cabinets and trim. The RV was taken to the local dealer, who replaced the bolts and screws, but later, while using the RV, the failures reoccurred. The RV was not yet repaired. The manufacturer was notified of the failure. The failu… Look up ODI 11681767 at NHTSA ↗
2025-09	1	None	ODI 11684821 · 6,000 mi The contact owns a 2021 Grand Design Momentum RV. The contact stated while the RV was parked and occupied, or while driving the RV, there was an abnormal popping and creaking sound coming from the frame of the RV while depressing accelerator pedal or depressing the brake pedal. Neither a dealer nor an independent mechanic was contacted. The contact stated that while driving the RV at an undisclosed speed, the doors opened independently. Additionally, while walking inside the RV, there was an abnormal sound coming from the floorboards. The conta… Look up ODI 11684821 at NHTSA ↗
2025-10	2	None	ODI 11695772 excessive frame flex/failure, Interior cabinetry coming cracked and apart. Floor separating from side walls. Main door coming open during transit. Look up ODI 11695772 at NHTSA ↗ ODI 11696350 · 15,000 mi The contact owns a 2021 Grand Design Recreational Momentum RV. The contact stated while driving 55 MPH, the RV frame flexed. The contact stated that when the RV was loaded, the failure persisted. The contact stated that the screws to the bedroom slide out were detaching. Neither an RV dealer nor an independent mechanic was contacted. The vehicle was not taken to a dealer or an independent mechanic to be diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact to bring the RV to a technician … Look up ODI 11696350 at NHTSA ↗
2025-11	1	None	ODI 11699857 The contact owns a 2021 Grand Design Momentum RV. The contact stated that while inspecting the RV, the contact became aware that the outrigger brackets were bent and fractured. The contact stated that the failure was visible over the axles. In addition, the welding on the cross-member beams was fractured, causing the floor to crack, and the exterior fiberglass was cracked by the bedroom slide-out. Additionally, there was a four-inch-long crack on the frame of the upper deck. Most recently, the contact found movement of the cabinets in the upper… Look up ODI 11699857 at NHTSA ↗
2025-12	0	None	No examples available for this selection.
2026-01	0	26V044000	No examples available for this selection.
2026-02	1	None	ODI 11720529 My Grand Design Momentum fifth wheel trailer is experiencing frame flex and structural integrity failure. The unit has developed spider cracking in the exterior fiberglass, interior wall separation, and plumbing issues believed to be caused by frame flex. The dealership has acknowledged structural concerns and installed lag bolts, but the underlying structural defect remains. Grand Design has denied that the frame flex caused the structural damage. This creates a serious safety risk while towing, including potential structural failure. I b… Look up ODI 11720529 at NHTSA ↗
2026-03	1	None	ODI 11727885 The contact owns a 2021 Grand Design Recreational Momentum. The contact stated that while hauling the RV and driving at undisclosed speeds, the rear side door unexpectedly opened and the slide-out extended outward. No warning light was illuminated. The trailer was taken to a local dealer and remained with the dealer for additional inspections. The RV was not repaired. The manufacturer was made aware of the failure. The failure mileage was unavailable. Look up ODI 11727885 at NHTSA ↗
2026-04	0	None	No examples available for this selection.
2026-05	3	None	ODI 11739591 Scheduled appointment with dealer for the Grand Design Frame Flex recall today, 22 May 2026. Approximately 4 hours after dropping the trailer off the dealer called and said that the technician found significant frame flex and that the unit was unsafe to be towed. No other information was provided. I did ask for the measurements that the TSB 24-001 requires to be filled out ans submitted to Grand Design. The lady that called was completely unaware of what I was asking for. Look up ODI 11739591 at NHTSA ↗ ODI 11739799 Regarding 2021 Grand Design Momentum 376THS: Compartment doors popping open during transport; Grand Design Customer Satisfaction Campaign TSB-24-001 dated 11/1/2025 regarding frame flex and wall securement. Returned to dealer on 12/1/2025 for inspection. Dealer found the following: All doors except p/s compartment door warped or bowed; P/S cracking in sidewall paneling on slides Front cap mollding broken screws Deformation or cracks at expansion joint located under upper deck slide out Gapping between exterior wall and floor Screw cover separ… Look up ODI 11739799 at NHTSA ↗ ODI 11740465 Frame cracked and suspension issues. Look up ODI 11740465 at NHTSA ↗
2026-06	0	None	No examples available for this selection.
2026-07	2	None	ODI 11749089 I am reporting a serious, progressive structural defect involving excessive frame flex and structural failure on a 2021 Grand Design Momentum 395MS fifth-wheel RV. This complaint directly aligns with the ongoing NHTSA investigation PE24-0209. The unit exhibits clear and worsening structural integrity failure, including: Slideouts and doors open during transport. Upper deck walls moving under load Lag bolts missing or backing out and pushing through flooring At least one critical structural bolt missing from factory installation Floor deforma… Look up ODI 11749089 at NHTSA ↗ ODI 11750219 We own a 2021 Grand Design Momentum 393g toy hauler that has severe frame flex and bolts in slide have started backing out. We noticed this when driving and the extreme pushing/chucking when accelerating or braking and also the visible failure on the unit. We have contacted Gran Design, the manufacturer, for warranty repair and was able to go see the unit when they torn down to look at frame. The side walls were both broken and wall frame fell out when opened up. The unit is now at the manufacturer in Indiana for repair, my husband did no… Look up ODI 11750219 at NHTSA ↗
2026-08	0	None	No examples available for this selection.
2026-09	1	None	ODI 11767267 Upon returning from a recent trip I discovered that the passenger side rear leaf spring had snapped in to, near the rear leaf spring hanger. The equalizer also had cracked welds because of the incident. Thankfully the front of the leaf spring was still attached. This RV issue may be related to the widely documented frame flex issue. 1) The RV is at home in my storage shed. 2) Our safety and other motorists were put at risks because if the axle would have completely detached from the frame, it could have caused a catastrophic accident. … Look up ODI 11767267 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: 24 complaints · 2023: 22 complaints

Equal observation windows
Model year	Through age 0	Through age 1	Through age 2
2022	2	10	24
2023	2	17	22

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	32	0	1
2023	24	0	0

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	Unknown Or Other	Structure:Body	Suspension	Structure	Latches/Locks/Linkages:Doors:Latch	Structure:Frame And Members	Equipment:Recreational Vehicle/Trailer	Service Brakes
Unknown Or Other	—	11 ODI 11490340 It is a common issue with the Grand Design Momentum G-class travel trailers where the interior floor and possibly the frame are flexing so much that is causes the laminate flooring to lift and separate from the plywood underneath. Bubbles in my laminate flooring were found during our initial walk through when our trailer was purchased, I was lead to believe that it was just a simple adhesive issue, but have since found from research that this is a common issue with all the g-class trailers. Many people on the Grand Design facebook pages have ex… Look up ODI 11490340 at NHTSA ↗ ODI 11579619 We have a 2021 Grand Design 353G Momentum fifth wheel RV. We have experienced frame failure with the upper deck of the RV. It has been inspected and repaired by the manufacturer recently, but I wanted to let you know about this issue that seems to be prevalent in the RV industry. It seems that the manufacturer has under engineered the chassis that Lipper has produced for them. I feel that this repair will not be sufficient for the life of the RV. I believe this is extremely unfair due to the cost of these and the cost my wife and I have in… Look up ODI 11579619 at NHTSA ↗ ODI 11581500 Signs of frame flex/failure Lag boats through frame beam into exterior walls, are protruding and coming out. Countertop and cabinet, rubbing against the walls, lots of cracks in the Front Cap. The RV as less then 5000 miles on it and only used maybe once a month during summer months. Per my research these are signs of frame flex/failure. Look up ODI 11581500 at NHTSA ↗	9 ODI 11575860 Frame failure causing the vehicle to be unsafe to tow given the failure is in the PIN area. If the PIN box fails that could cause a catastrophic accident resulting in great harm or death to the driving public. Grand Design has failed to take full ownership of this issue with 100's of their large 5th wheel. On inspection welds are weak or missing leading to these RV's becoming unsafe to tow down the road. While GD has approved some work to remediate the broken welds, it's minimum effort and not a full fix. It will still be unsafe to tow wit… Look up ODI 11575860 at NHTSA ↗ ODI 11584593 In february 2023 we noticed several internal (sawdust, exposed finish nails, floor noises, broken trim, pinched wall coverings) and external (multiple locked doors opening in transit)signs that our RV frame was experiencing excessive flexing, more than what is expected and necessary for a nearly 42' metal vehicle frame. The frame has since failed, the suspension is underrated for the weight of the vehicle. The manufacturers UVW and GVWR sticker knowingly contained incorrect OEM information with proof from a CAT scale leading to me as the owner… Look up ODI 11584593 at NHTSA ↗ ODI 11592358 Our frame is showing signs of excessive flex, when we hook up our trailer to the tow vehicle. Look up ODI 11592358 at NHTSA ↗	7 ODI 11573633 Frame Failure: Welds broke, and walls separated. The dealer and manufacturer acknowledged the issue and repaired the issue. Look up ODI 11573633 at NHTSA ↗ ODI 11588931 Our 5th wheel RV has had frame flex (frame failure) 4 separate times. The manufacturer has "fixed" it 3 times unsuccessfully. We have just owned this for 3 years and due to the length of time in between reporting to the manufacturer and waiting for repairs, the RV has been broken more than not during ownership. The pinbox is currently flexing due to broken welds on the frame and causes interior and exterior damage to the unit each time it is towed. Look up ODI 11588931 at NHTSA ↗ ODI 11623904 I had noticed the Pin Box flexing, especially over bumps or any rough road or bridge approach. As it got worse I could tell we a lot of flex in the frame area where the Pin Box is located. I contacted the dealer and they examined our RV and determined the frame was flexing due to the bolts connecting the chassis to the actual frame of the RV body being to small and working loose/broke. The dealer replaced the bolts with larger bolts and advised the flex is now within specifications. It is better but it's not great by any means. I'm concer… Look up ODI 11623904 at NHTSA ↗	3 ODI 11636185 Side compartments opening while towing unit on highway…items in compartment flying out …hatches won’t closed properly to much gap…big gap also on top cap where it connects to wall in front..unit taken to lazdays Tampa for frame flex recall…inspection revealed major cracks in frame everywhere as a result causing major frame flex…lots of welding is being done…by grand design mechanic ..slide system also damaged as a result of frame flex …unit is currently still at lazdays Tampa being welded together…they keep finding more and more damage …. You … Look up ODI 11636185 at NHTSA ↗ ODI 11636284 Excessive frame flex in pin box area of fifth wheel. Forward left cargo door unlatching while towing. Vehicle is currently at Lazydays dealer in TN for inspection and TSB for excessive frame flex. Inspection has revealed major structural cracks and structural failure in upper deck steel frame structure. Vehicle has been deemed unsafe to transport and must be repaired in place or partially repaired for transport to factory. We noticed excessive deformation of the pin box and substantial rubbing of internal cabinets, etc upon return from a r… Look up ODI 11636284 at NHTSA ↗ ODI 11664700 FRAME FAILURE AND STRUCTURE. CARGO DOOR OPENED WHILE TRAVELING. (SAFETY ISSUE) FURNITURE SEPARATING FROM STRUCTURE. BROKEN OVERHEAD CABINETS OVER BED (SAFETY ISSUE) WALL SEPARATING FROM FLOOR IN CARGO AREA WOOD DUSTING FROM CEILING IN BEDROOM AND GARAGE AREA. Look up ODI 11664700 at NHTSA ↗	0	1 ODI 11641333 Main doors coming open - currently bungee cording , cargo doors coming open - currently bungee cording, slides coming out a couple inches, leaf spring broke during travel on interstate, open case with Grand Design since January 22, 2023, case # 00621051 and Grand Design has not been helpful in addressing these issues. An RV tech confirmed frame flex symptoms: sawdust from nose of rv in interior, furniture rubbing on walls moving bac and forth, broken cabinets coming out of ceiling, missing screws. Look up ODI 11641333 at NHTSA ↗	0
Structure:Body	11 ODI 11490340 It is a common issue with the Grand Design Momentum G-class travel trailers where the interior floor and possibly the frame are flexing so much that is causes the laminate flooring to lift and separate from the plywood underneath. Bubbles in my laminate flooring were found during our initial walk through when our trailer was purchased, I was lead to believe that it was just a simple adhesive issue, but have since found from research that this is a common issue with all the g-class trailers. Many people on the Grand Design facebook pages have ex… Look up ODI 11490340 at NHTSA ↗ ODI 11579619 We have a 2021 Grand Design 353G Momentum fifth wheel RV. We have experienced frame failure with the upper deck of the RV. It has been inspected and repaired by the manufacturer recently, but I wanted to let you know about this issue that seems to be prevalent in the RV industry. It seems that the manufacturer has under engineered the chassis that Lipper has produced for them. I feel that this repair will not be sufficient for the life of the RV. I believe this is extremely unfair due to the cost of these and the cost my wife and I have in… Look up ODI 11579619 at NHTSA ↗ ODI 11581500 Signs of frame flex/failure Lag boats through frame beam into exterior walls, are protruding and coming out. Countertop and cabinet, rubbing against the walls, lots of cracks in the Front Cap. The RV as less then 5000 miles on it and only used maybe once a month during summer months. Per my research these are signs of frame flex/failure. Look up ODI 11581500 at NHTSA ↗	—	8 ODI 11584593 In february 2023 we noticed several internal (sawdust, exposed finish nails, floor noises, broken trim, pinched wall coverings) and external (multiple locked doors opening in transit)signs that our RV frame was experiencing excessive flexing, more than what is expected and necessary for a nearly 42' metal vehicle frame. The frame has since failed, the suspension is underrated for the weight of the vehicle. The manufacturers UVW and GVWR sticker knowingly contained incorrect OEM information with proof from a CAT scale leading to me as the owner… Look up ODI 11584593 at NHTSA ↗ ODI 11588312 Frame flexing issues. Storage compartment doors opening while towing and loosing belongings. Look up ODI 11588312 at NHTSA ↗ ODI 11589433 There are hairline cracks in the frame / Axle hanger(s), throughout the entire inside floor there are drops / gaps when a level is put down of a minimum of 1/8" - showing symptoms of frame flex / failure. On the road, the trailer produces excessive sway, bounce, and movement at speeds of 45 mph and above to the point where control has almost been lost on the roadway. It has been towed and tested with 3 different vehicles (2019 F250 Diesel, 2022 F450 Dually Diesel, and 2023 F250 Gas). documentation, video proof, Multiple witnesses, and different… Look up ODI 11589433 at NHTSA ↗	0	1 ODI 11636185 Side compartments opening while towing unit on highway…items in compartment flying out …hatches won’t closed properly to much gap…big gap also on top cap where it connects to wall in front..unit taken to lazdays Tampa for frame flex recall…inspection revealed major cracks in frame everywhere as a result causing major frame flex…lots of welding is being done…by grand design mechanic ..slide system also damaged as a result of frame flex …unit is currently still at lazdays Tampa being welded together…they keep finding more and more damage …. You … Look up ODI 11636185 at NHTSA ↗	0	0	1 ODI 11593059 This is an updated report with additional detail. Sorry for any confusion this may have caused. * Baggage door routinely open while travelling. A number of items may have been sucked out of the RV while moving down the road. We try to be hypervigilant and pull over as soon as we notice the door flapping open, and we secure loose items in drawers. * RV doors routinely open. The front door always opens, even though we use the 'deadbolt'. It's usually held in place by a hand rail that folds over the door, but this occassionally comes open, as wel… Look up ODI 11593059 at NHTSA ↗
Suspension	9 ODI 11575860 Frame failure causing the vehicle to be unsafe to tow given the failure is in the PIN area. If the PIN box fails that could cause a catastrophic accident resulting in great harm or death to the driving public. Grand Design has failed to take full ownership of this issue with 100's of their large 5th wheel. On inspection welds are weak or missing leading to these RV's becoming unsafe to tow down the road. While GD has approved some work to remediate the broken welds, it's minimum effort and not a full fix. It will still be unsafe to tow wit… Look up ODI 11575860 at NHTSA ↗ ODI 11584593 In february 2023 we noticed several internal (sawdust, exposed finish nails, floor noises, broken trim, pinched wall coverings) and external (multiple locked doors opening in transit)signs that our RV frame was experiencing excessive flexing, more than what is expected and necessary for a nearly 42' metal vehicle frame. The frame has since failed, the suspension is underrated for the weight of the vehicle. The manufacturers UVW and GVWR sticker knowingly contained incorrect OEM information with proof from a CAT scale leading to me as the owner… Look up ODI 11584593 at NHTSA ↗ ODI 11592358 Our frame is showing signs of excessive flex, when we hook up our trailer to the tow vehicle. Look up ODI 11592358 at NHTSA ↗	8 ODI 11584593 In february 2023 we noticed several internal (sawdust, exposed finish nails, floor noises, broken trim, pinched wall coverings) and external (multiple locked doors opening in transit)signs that our RV frame was experiencing excessive flexing, more than what is expected and necessary for a nearly 42' metal vehicle frame. The frame has since failed, the suspension is underrated for the weight of the vehicle. The manufacturers UVW and GVWR sticker knowingly contained incorrect OEM information with proof from a CAT scale leading to me as the owner… Look up ODI 11584593 at NHTSA ↗ ODI 11588312 Frame flexing issues. Storage compartment doors opening while towing and loosing belongings. Look up ODI 11588312 at NHTSA ↗ ODI 11589433 There are hairline cracks in the frame / Axle hanger(s), throughout the entire inside floor there are drops / gaps when a level is put down of a minimum of 1/8" - showing symptoms of frame flex / failure. On the road, the trailer produces excessive sway, bounce, and movement at speeds of 45 mph and above to the point where control has almost been lost on the roadway. It has been towed and tested with 3 different vehicles (2019 F250 Diesel, 2022 F450 Dually Diesel, and 2023 F250 Gas). documentation, video proof, Multiple witnesses, and different… Look up ODI 11589433 at NHTSA ↗	—	2 ODI 11613696 Our 2021 Grand Design 395ms has FRAME FAILURE. The upper body of the frame has multiple broken welds and has separated during road use. If the welds continue to fail I have been told the lower half of the 5th wheel will fall to the pavement. If this were to occur during travel it could be catastrophic. This issue was iniitally repaired in thermopolis by a mobile welder. This initial repair failed and we had to contact the manufacturer. They initially told us it would be a couple months before their SRT team could repair. After multiple days we … Look up ODI 11613696 at NHTSA ↗ ODI 11740465 Frame cracked and suspension issues. Look up ODI 11740465 at NHTSA ↗	0	1 ODI 11681297 · 8,000 mi The contact owns a 2021 Grand Design Momentum. The contact stated that while the trailer was parked, the contact became aware that the axle on the trailer had become inoperable. The contact stated that the axle springs had detached, and the I-beam frame of the trailer was bent. The trailer was taken to an independent mechanic, where it was diagnosed and determined that the axle springs and the frame had failed and needed to be replaced. The trailer was not repaired. The dealer was contacted; however, the trailer was not diagnosed or repaired. T… Look up ODI 11681297 at NHTSA ↗	0	0
Structure	7 ODI 11573633 Frame Failure: Welds broke, and walls separated. The dealer and manufacturer acknowledged the issue and repaired the issue. Look up ODI 11573633 at NHTSA ↗ ODI 11588931 Our 5th wheel RV has had frame flex (frame failure) 4 separate times. The manufacturer has "fixed" it 3 times unsuccessfully. We have just owned this for 3 years and due to the length of time in between reporting to the manufacturer and waiting for repairs, the RV has been broken more than not during ownership. The pinbox is currently flexing due to broken welds on the frame and causes interior and exterior damage to the unit each time it is towed. Look up ODI 11588931 at NHTSA ↗ ODI 11623904 I had noticed the Pin Box flexing, especially over bumps or any rough road or bridge approach. As it got worse I could tell we a lot of flex in the frame area where the Pin Box is located. I contacted the dealer and they examined our RV and determined the frame was flexing due to the bolts connecting the chassis to the actual frame of the RV body being to small and working loose/broke. The dealer replaced the bolts with larger bolts and advised the flex is now within specifications. It is better but it's not great by any means. I'm concer… Look up ODI 11623904 at NHTSA ↗	0	2 ODI 11613696 Our 2021 Grand Design 395ms has FRAME FAILURE. The upper body of the frame has multiple broken welds and has separated during road use. If the welds continue to fail I have been told the lower half of the 5th wheel will fall to the pavement. If this were to occur during travel it could be catastrophic. This issue was iniitally repaired in thermopolis by a mobile welder. This initial repair failed and we had to contact the manufacturer. They initially told us it would be a couple months before their SRT team could repair. After multiple days we … Look up ODI 11613696 at NHTSA ↗ ODI 11740465 Frame cracked and suspension issues. Look up ODI 11740465 at NHTSA ↗	—	6 ODI 11636284 Excessive frame flex in pin box area of fifth wheel. Forward left cargo door unlatching while towing. Vehicle is currently at Lazydays dealer in TN for inspection and TSB for excessive frame flex. Inspection has revealed major structural cracks and structural failure in upper deck steel frame structure. Vehicle has been deemed unsafe to transport and must be repaired in place or partially repaired for transport to factory. We noticed excessive deformation of the pin box and substantial rubbing of internal cabinets, etc upon return from a r… Look up ODI 11636284 at NHTSA ↗ ODI 11664700 FRAME FAILURE AND STRUCTURE. CARGO DOOR OPENED WHILE TRAVELING. (SAFETY ISSUE) FURNITURE SEPARATING FROM STRUCTURE. BROKEN OVERHEAD CABINETS OVER BED (SAFETY ISSUE) WALL SEPARATING FROM FLOOR IN CARGO AREA WOOD DUSTING FROM CEILING IN BEDROOM AND GARAGE AREA. Look up ODI 11664700 at NHTSA ↗ ODI 11671713 Frame failure 2 inches of deflection Doors popped open on hwy walls cracked lag bolts falling out water leaks and floor rotting out from flex Look up ODI 11671713 at NHTSA ↗	0	1 ODI 11749089 I am reporting a serious, progressive structural defect involving excessive frame flex and structural failure on a 2021 Grand Design Momentum 395MS fifth-wheel RV. This complaint directly aligns with the ongoing NHTSA investigation PE24-0209. The unit exhibits clear and worsening structural integrity failure, including: Slideouts and doors open during transport. Upper deck walls moving under load Lag bolts missing or backing out and pushing through flooring At least one critical structural bolt missing from factory installation Floor deforma… Look up ODI 11749089 at NHTSA ↗	0
Latches/Locks/Linkages:Doors:Latch	3 ODI 11636185 Side compartments opening while towing unit on highway…items in compartment flying out …hatches won’t closed properly to much gap…big gap also on top cap where it connects to wall in front..unit taken to lazdays Tampa for frame flex recall…inspection revealed major cracks in frame everywhere as a result causing major frame flex…lots of welding is being done…by grand design mechanic ..slide system also damaged as a result of frame flex …unit is currently still at lazdays Tampa being welded together…they keep finding more and more damage …. You … Look up ODI 11636185 at NHTSA ↗ ODI 11636284 Excessive frame flex in pin box area of fifth wheel. Forward left cargo door unlatching while towing. Vehicle is currently at Lazydays dealer in TN for inspection and TSB for excessive frame flex. Inspection has revealed major structural cracks and structural failure in upper deck steel frame structure. Vehicle has been deemed unsafe to transport and must be repaired in place or partially repaired for transport to factory. We noticed excessive deformation of the pin box and substantial rubbing of internal cabinets, etc upon return from a r… Look up ODI 11636284 at NHTSA ↗ ODI 11664700 FRAME FAILURE AND STRUCTURE. CARGO DOOR OPENED WHILE TRAVELING. (SAFETY ISSUE) FURNITURE SEPARATING FROM STRUCTURE. BROKEN OVERHEAD CABINETS OVER BED (SAFETY ISSUE) WALL SEPARATING FROM FLOOR IN CARGO AREA WOOD DUSTING FROM CEILING IN BEDROOM AND GARAGE AREA. Look up ODI 11664700 at NHTSA ↗	1 ODI 11636185 Side compartments opening while towing unit on highway…items in compartment flying out …hatches won’t closed properly to much gap…big gap also on top cap where it connects to wall in front..unit taken to lazdays Tampa for frame flex recall…inspection revealed major cracks in frame everywhere as a result causing major frame flex…lots of welding is being done…by grand design mechanic ..slide system also damaged as a result of frame flex …unit is currently still at lazdays Tampa being welded together…they keep finding more and more damage …. You … Look up ODI 11636185 at NHTSA ↗	0	6 ODI 11636284 Excessive frame flex in pin box area of fifth wheel. Forward left cargo door unlatching while towing. Vehicle is currently at Lazydays dealer in TN for inspection and TSB for excessive frame flex. Inspection has revealed major structural cracks and structural failure in upper deck steel frame structure. Vehicle has been deemed unsafe to transport and must be repaired in place or partially repaired for transport to factory. We noticed excessive deformation of the pin box and substantial rubbing of internal cabinets, etc upon return from a r… Look up ODI 11636284 at NHTSA ↗ ODI 11664700 FRAME FAILURE AND STRUCTURE. CARGO DOOR OPENED WHILE TRAVELING. (SAFETY ISSUE) FURNITURE SEPARATING FROM STRUCTURE. BROKEN OVERHEAD CABINETS OVER BED (SAFETY ISSUE) WALL SEPARATING FROM FLOOR IN CARGO AREA WOOD DUSTING FROM CEILING IN BEDROOM AND GARAGE AREA. Look up ODI 11664700 at NHTSA ↗ ODI 11671713 Frame failure 2 inches of deflection Doors popped open on hwy walls cracked lag bolts falling out water leaks and floor rotting out from flex Look up ODI 11671713 at NHTSA ↗	—	1 ODI 11696350 · 15,000 mi The contact owns a 2021 Grand Design Recreational Momentum RV. The contact stated while driving 55 MPH, the RV frame flexed. The contact stated that when the RV was loaded, the failure persisted. The contact stated that the screws to the bedroom slide out were detaching. Neither an RV dealer nor an independent mechanic was contacted. The vehicle was not taken to a dealer or an independent mechanic to be diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact to bring the RV to a technician … Look up ODI 11696350 at NHTSA ↗	2 ODI 11727885 The contact owns a 2021 Grand Design Recreational Momentum. The contact stated that while hauling the RV and driving at undisclosed speeds, the rear side door unexpectedly opened and the slide-out extended outward. No warning light was illuminated. The trailer was taken to a local dealer and remained with the dealer for additional inspections. The RV was not repaired. The manufacturer was made aware of the failure. The failure mileage was unavailable. Look up ODI 11727885 at NHTSA ↗ ODI 11749089 I am reporting a serious, progressive structural defect involving excessive frame flex and structural failure on a 2021 Grand Design Momentum 395MS fifth-wheel RV. This complaint directly aligns with the ongoing NHTSA investigation PE24-0209. The unit exhibits clear and worsening structural integrity failure, including: Slideouts and doors open during transport. Upper deck walls moving under load Lag bolts missing or backing out and pushing through flooring At least one critical structural bolt missing from factory installation Floor deforma… Look up ODI 11749089 at NHTSA ↗	0
Structure:Frame And Members	0	0	1 ODI 11681297 · 8,000 mi The contact owns a 2021 Grand Design Momentum. The contact stated that while the trailer was parked, the contact became aware that the axle on the trailer had become inoperable. The contact stated that the axle springs had detached, and the I-beam frame of the trailer was bent. The trailer was taken to an independent mechanic, where it was diagnosed and determined that the axle springs and the frame had failed and needed to be replaced. The trailer was not repaired. The dealer was contacted; however, the trailer was not diagnosed or repaired. T… Look up ODI 11681297 at NHTSA ↗	0	1 ODI 11696350 · 15,000 mi The contact owns a 2021 Grand Design Recreational Momentum RV. The contact stated while driving 55 MPH, the RV frame flexed. The contact stated that when the RV was loaded, the failure persisted. The contact stated that the screws to the bedroom slide out were detaching. Neither an RV dealer nor an independent mechanic was contacted. The vehicle was not taken to a dealer or an independent mechanic to be diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact to bring the RV to a technician … Look up ODI 11696350 at NHTSA ↗	—	0	0
Equipment:Recreational Vehicle/Trailer	1 ODI 11641333 Main doors coming open - currently bungee cording , cargo doors coming open - currently bungee cording, slides coming out a couple inches, leaf spring broke during travel on interstate, open case with Grand Design since January 22, 2023, case # 00621051 and Grand Design has not been helpful in addressing these issues. An RV tech confirmed frame flex symptoms: sawdust from nose of rv in interior, furniture rubbing on walls moving bac and forth, broken cabinets coming out of ceiling, missing screws. Look up ODI 11641333 at NHTSA ↗	0	0	1 ODI 11749089 I am reporting a serious, progressive structural defect involving excessive frame flex and structural failure on a 2021 Grand Design Momentum 395MS fifth-wheel RV. This complaint directly aligns with the ongoing NHTSA investigation PE24-0209. The unit exhibits clear and worsening structural integrity failure, including: Slideouts and doors open during transport. Upper deck walls moving under load Lag bolts missing or backing out and pushing through flooring At least one critical structural bolt missing from factory installation Floor deforma… Look up ODI 11749089 at NHTSA ↗	2 ODI 11727885 The contact owns a 2021 Grand Design Recreational Momentum. The contact stated that while hauling the RV and driving at undisclosed speeds, the rear side door unexpectedly opened and the slide-out extended outward. No warning light was illuminated. The trailer was taken to a local dealer and remained with the dealer for additional inspections. The RV was not repaired. The manufacturer was made aware of the failure. The failure mileage was unavailable. Look up ODI 11727885 at NHTSA ↗ ODI 11749089 I am reporting a serious, progressive structural defect involving excessive frame flex and structural failure on a 2021 Grand Design Momentum 395MS fifth-wheel RV. This complaint directly aligns with the ongoing NHTSA investigation PE24-0209. The unit exhibits clear and worsening structural integrity failure, including: Slideouts and doors open during transport. Upper deck walls moving under load Lag bolts missing or backing out and pushing through flooring At least one critical structural bolt missing from factory installation Floor deforma… Look up ODI 11749089 at NHTSA ↗	0	—	0
Service Brakes	0	1 ODI 11593059 This is an updated report with additional detail. Sorry for any confusion this may have caused. * Baggage door routinely open while travelling. A number of items may have been sucked out of the RV while moving down the road. We try to be hypervigilant and pull over as soon as we notice the door flapping open, and we secure loose items in drawers. * RV doors routinely open. The front door always opens, even though we use the 'deadbolt'. It's usually held in place by a hand rail that folds over the door, but this occassionally comes open, as wel… Look up ODI 11593059 at NHTSA ↗	0	0	0	0	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

2 patterns with matching reports.

Brake response concerns

1 mentions · 1.8% of complaints

Median mileage: 6,000 mi (1 usable records).

ODI 11684821 · 6,000 mi

The contact owns a 2021 Grand Design Momentum RV. The contact stated while the RV was parked and occupied, or while driving the RV, there was an abnormal popping and creaking sound coming from the frame of the RV while depressing accelerator pedal or depressing the brake pedal. Neither a dealer nor an independent mechanic was contacted. The contact stated that while driving the RV at an undisclosed speed, the doors opened independently. Additionally, while walking inside the RV, there was an abnormal sound coming from the floorboards. The conta…

Look up ODI 11684821 at NHTSA ↗

Matching rule

Warning lights and dashboard alerts

1 mentions · 1.8% of complaints

Median mileage: Unavailable (0 usable records).

ODI 11727885

The contact owns a 2021 Grand Design Recreational Momentum. The contact stated that while hauling the RV and driving at undisclosed speeds, the rear side door unexpectedly opened and the slide-out extended outward. No warning light was illuminated. The trailer was taken to a local dealer and remained with the dealer for additional inspections. The RV was not repaired. The manufacturer was made aware of the failure. The failure mileage was unavailable.

Look up ODI 11727885 at NHTSA ↗

Matching rule

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