AI DamagePeterbilt 337: problems, complaints, bulletins
Summary for the Peterbilt 337 across 8 model years: 0 owner complaints and 49 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Equipment | 0 | 0 | 32 |
| Electrical system | 0 | 0 | 30 |
| Service brakes | 0 | 0 | 27 |
| Engine and cooling | 0 | 0 | 23 |
| Engine | 0 | 0 | 17 |
| Structure | 0 | 0 | 17 |
| Suspension | 0 | 0 | 13 |
| Fuel system | 0 | 0 | 11 |
| Forward collision avoidance | 0 | 0 | 7 |
| Visibility | 0 | 0 | 7 |
| Powertrain | 0 | 0 | 6 |
| Steering | 0 | 0 | 6 |
| Vehicle speed control | 0 | 0 | 6 |
| Wheels | 0 | 0 | 3 |
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- "Kenworth
- The verbiage in the Introduction section has been updated
- KW & PB DEF Quality Sensor part number Q21-6127-001 for PACCAR PX-7 and Cummins X15 engines has been added…
- Sheppard Recall Order Process Update - The Parts section has been updated with revised steps for opening a…
- Safety Recall Updated software and procedures are now available
- Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting…
- 13-065 DAVIE4 Chassis Air Leak Testing Info Only A new test is now available in DAVIE4 to properly measure…
- 07/24/2024 - Updated the Emissions Warranty Coverage tables
- Fix As Fail The height control valve (HCV) rod on vehicles with low air leaf suspensions is prone to…
- CARB Emission s Manufacturer Warranty term and/or kilometers conversion displayed in certain EMY 2022-2023…
- Peterbilt has determined that certain model year 2021, pre-production chassis are eligible to have…
- An engine software defect exists in certain vehicles equipped with EMY17 MX-13 and MX-11 engines that…
Other models of this make
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.