Service bulletins for the 2020 Kenworth W990
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
53 on file from NHTSA, as of 2026-10-19.
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By component
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Only bulletins with component: Transmission and driveline are shown. Show all
| 26-035 | 2026-07-21. Service bulletin. POWER TRAIN. Updated Eaton's TAIB0885EN Bulletin link. |
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| A003 | 2020-11-05. Service bulletin. POWER TRAIN; STEERING. PACCAR has determined that all Set Forward Front Axle (SFFA) models with the PACCAR 20K front steer axle and wide-based tires have the potential to experience a shimmy or shake in the front axle. Wide-based tires include any series tires with widths of 385 mm or higher. This is due a lack of friction in the current axle rotating components. Replacing the thrust roller bearing with a thrust washer assembly creates enough friction to eliminate the shimmy. |
| 22-016 | 2020-01-04. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; WHEELS; POWER TRAIN; EQUIPMENT. This bulletin has been obsoleted and replaced by Safety Recall 19KWE. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.