Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.
Data completeness
5 unique complaints in this selection. Analysis snapshot: 2026-10-01.
20.0%Usable mileage1 / 5 records
80.0%Valid incident date4 / 5 records
100.0%Valid filing date5 / 5 records
80.0%Ordered incident and filing dates4 / 5 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.
Component complaint heatmap
Component
1989
1995
1996
1997
2001
Electrical System:Wiring:Interior/Under Dash
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.
150.0%ODI 10000784 · 65,000 mi
2001 MACK MODEL CH613. THIS VEHICLE HAS HAD MULTIPLE POWER LOSSES TO ALL THE GAUGES IN THE INSTRMENT CLUSTER. ALL THE POWER TO THE CLUSTER GOES OUT AND THE GAUGES GO BLANK. THIS CONDITION LAST UNTIL YOU PULL OFF THE ROAD, SHUT OFF THE VEHICLE AND RE-START THE VEHICLE. THIS CLUSTER UNIT FAILED THE FIRST TIME ABOUT 6 MONTHS AFTER THE PURCHASE DATE OF 03-06-01. THE DEALER REPLACED THE CLUSTER UNIT. THE PROBLEM STILL OCCURED INTERMITENTLY OVER THE NEXT YEAR. ON 12/10/02 THE MANUFACTURER ISSUED SERVICE BULLETIN # SB-732-005. THIS SERVICE BULLETIN …
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
Engine And Engine Cooling:Exhaust System:Emission Control:Crankcase (Pcv)
0Unavailable
No examples available for this selection.
00.0%
No examples available for this selection.
00.0%
No examples available for this selection.
1100.0%ODI 871517
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
MACK TRUCK HAS ADMITTED TO A FAILURE IN THERE ALUMINUM FUEL TANKS DUE TO ELECTROLISIS BETWEEN THE MOUNTING BRACKETS & THE TANK. THEY EXTENDED A ONE YEAR WARRANTY TO FIVE YEARS & NEVER INFORMED ANY OWNERS OF THE PROBLEM. THESE TRUCKS USUALLY PUT MORE THAN 250,00 MILES ON THEM IN THE TIME FRAME WE HAVE THIS ONE, WE DON'T USE IT OFTEN. ISN'T IT A SAFTY MATTER FOR MACK TO HAVE INFORMED ALL OWNERS OF THIS PROBLEM? WHAT IF THESE LEAKS CAUSE AN EXPLOSION & KILLS THE DRIC=VER OR VEHICAL CLOSE TO THEM AT THE TIME OF AN INCIDENT. I HAVE CALLED MACK OF NO…
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
INTERMITTENT BRAKE FAILURE ON MACK 2001 CH VIN [XXX] BRAKE PEDAL FELT SPONGY, WENT ALL WAY TO FLOOR. BRAKES WORKED FINE A SHORT DISTANCE AWAY PRIOR TO BRAKE FAILURE OCCURRENCE. STRANGE THING, AT TIME WHEN BRAKE FAILURE OCCURRED BRAKE AIR PRESSURE GAUGE STAYED FIXED AND DID NOT DROP BACK SLIGHTLY AS YOU WOULD NORMALLY EXPECT IT TO DO. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.
Failure mileage by component
Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.
Component failure mileage distribution
Component
Mileage range (25th–75th percentile)
Median
Usable records
Examples
Electrical System:Wiring:Interior/Under Dash
Too few reports for a range
65,000 mi
1 (sparse)
ODI 10000784 · 65,000 mi
2001 MACK MODEL CH613. THIS VEHICLE HAS HAD MULTIPLE POWER LOSSES TO ALL THE GAUGES IN THE INSTRMENT CLUSTER. ALL THE POWER TO THE CLUSTER GOES OUT AND THE GAUGES GO BLANK. THIS CONDITION LAST UNTIL YOU PULL OFF THE ROAD, SHUT OFF THE VEHICLE AND RE-START THE VEHICLE. THIS CLUSTER UNIT FAILED THE FIRST TIME ABOUT 6 MONTHS AFTER THE PURCHASE DATE OF 03-06-01. THE DEALER REPLACED THE CLUSTER UNIT. THE PROBLEM STILL OCCURED INTERMITENTLY OVER THE NEXT YEAR. ON 12/10/02 THE MANUFACTURER ISSUED SERVICE BULLETIN # SB-732-005. THIS SERVICE BULLETIN …
Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.
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
0
None
No examples available for this selection.
2024-12
0
None
No examples available for this selection.
2025-01
0
None
No examples available for this selection.
2025-02
0
None
No examples available for this selection.
2025-03
0
None
No examples available for this selection.
2025-04
0
None
No examples available for this selection.
2025-05
0
None
No examples available for this selection.
2025-06
0
None
No examples available for this selection.
2025-07
0
None
No examples available for this selection.
2025-08
0
None
No examples available for this selection.
2025-09
0
None
No examples available for this selection.
2025-10
0
None
No examples available for this selection.
2025-11
0
None
No examples available for this selection.
2025-12
0
None
No examples available for this selection.
2026-01
0
None
No examples available for this selection.
2026-02
0
None
No examples available for this selection.
2026-03
0
None
No examples available for this selection.
2026-04
0
None
No examples available for this selection.
2026-05
0
None
No examples available for this selection.
2026-06
0
None
No examples available for this selection.
2026-07
0
None
No examples available for this selection.
2026-08
0
None
No examples available for this selection.
2026-09
0
None
No examples available for this selection.
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.
1997: 1 complaints · 2001: 2 complaints
Equal observation windows
Model year
Through age 0
Through age 1
Through age 2
1997
0
0
1
2001
1
2
2
Date coverage across each selected cohort
Date basis for all complaints in selected model years
Year
Incident dates used
Filing date fallbacks
Excluded dates
1997
1
0
0
2001
2
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
Electrical System:Wiring:Interior/Under Dash
Engine And Engine Cooling:Engine
Engine And Engine Cooling:Exhaust System:Emission Control:Crankcase (Pcv)
Fuel System, Gasoline:Storage:Tank Assembly
Power Train:Automatic Transmission
Power Train:Driveline:Differential Unit
Service Brakes, Air:Antilock
Structure:Frame And Members
Electrical System:Wiring:Interior/Under Dash
—
0
0
0
0
0
0
0
Engine And Engine Cooling:Engine
0
—
1ODI 871517
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
Engine And Engine Cooling:Exhaust System:Emission Control:Crankcase (Pcv)
0
1ODI 871517
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
CHASSIS HAS FAILED. CROSS MEMBERS HAD BROKEN. REAR END DIFFERENTIALS WERE SHATTERED & BORED THROUGH THE CASINGS & LEAKED OIL. ENGINE HEAD & INTAKE VALVE BROKE & CAME OUT THE EXHAUST. TRANSMISSION GEARS BROKE & COULD NOT BE SHIFTED.*AK *SLC
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.
1 patterns with matching reports.
Brake response concerns
1 mentions · 20.0% of complaints
Median mileage: Unavailable (0 usable records).
ODI 10002882
INTERMITTENT BRAKE FAILURE ON MACK 2001 CH VIN [XXX] BRAKE PEDAL FELT SPONGY, WENT ALL WAY TO FLOOR. BRAKES WORKED FINE A SHORT DISTANCE AWAY PRIOR TO BRAKE FAILURE OCCURRENCE. STRANGE THING, AT TIME WHEN BRAKE FAILURE OCCURRED BRAKE AIR PRESSURE GAUGE STAYED FIXED AND DID NOT DROP BACK SLIGHTLY AS YOU WOULD NORMALLY EXPECT IT TO DO. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR