Service bulletins for the 2017 Western Star 4900
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.
670 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Transmission and driveline are shown. Show all
| 16 TS-16 | 2016-10-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 16TS16 DETROIT™ DT12™ TRANSMISSION OIL AND OIL FILL/DRAIN PLUG WASHERS |
|---|---|
| ICI16-011 | 2016-09-08. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. ALLISON TECH TIP #TT7831EN TRANSMISSION PROGRAMMING |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.