Kenworth W990: problems, complaints, bulletins
Summary for the Kenworth W990 across 10 model years: 0 owner complaints and 145 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) |
|---|---|---|---|
| Engine | 0 | 0 | 183 |
| Electrical system | 0 | 0 | 96 |
| Engine and cooling | 0 | 0 | 59 |
| Powertrain | 0 | 0 | 47 |
| Equipment | 0 | 0 | 27 |
| Steering | 0 | 0 | 23 |
| Structure | 0 | 0 | 19 |
| Fuel system | 0 | 0 | 18 |
| Exterior lighting | 0 | 0 | 9 |
| Service brakes | 0 | 0 | 7 |
| Visibility | 0 | 0 | 7 |
| Forward collision avoidance | 0 | 0 | 5 |
| Fuel/propulsion system | 0 | 0 | 3 |
| Suspension | 0 | 0 | 2 |
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Certain Kenworth EMY 2022 T680, T880 and W990 chassis may not contain an EAS operator’s manual in the…
- "The PKC Group power distribution center (PDC) in certain vehicles may be contaminated with oil, which…
- "Kenworth
- [SmartAir / KIMS] A/C systems may shut down prematurely when voltage levels drop below a certain threshold
- An exhaust manifold slip joint seal kit is now available for EPA 2017-2024 PACCAR MX-13 engines
- "KW
- "KW
- "KW
- "KW
- This optional software update is expected to be available after 08/28/2026
- "PB
- "KW -The chassis list has been updated to include 2 chassis
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.