Service bulletins for the 2018 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.
523 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Body and frame are shown. Show all
| SBW72-008REV | 2020-05-23. Service bulletin. STRUCTURE; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. Service Bulletin for Window Regulator Retrofit. The bulletin dated December 4, 2019 has been revised to include 4800 Models. Beginning 04/01/2019 Western Star cab doors were updated to a new style regulator and window. When replacing an older style regulator or window the vehicle must be retrofitted to the new style regulator and window. |
|---|---|
| WP20-002 | 2020-03-17. Service bulletin. STRUCTURE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Warranty Policy Letter explaining the Warranty Department is aligning with the frame rail repair policy, published in DTNA Workshop Manuals, which states that there are very few cases in which welding a heat-treated frame rail is allowed. Therefore, before welding anything on a frame rail, contact the applicable regional service representative for approval. |
| SBW72-008 | 2019-12-20. Service bulletin. STRUCTURE; VISIBILITY. Service Bulletin for Window Regulator Retrofit. |
| SS1034577 | 2019-12-03. Service bulletin. EQUIPMENT; POWER TRAIN; STRUCTURE; EQUIPMENT ADAPTIVE/MOBILITY. Service Solution to address WST Cab drone / vibration / tapping Under acceleration for vehicles w/Eaton Manual Trans. |
| 19TL-10 NVH | 2019-09-09. Service bulletin. STRUCTURE. Communication to assist the field with service vibration issues on DTNA vehicles |
| sbw8329 | 2018-10-29. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; STRUCTURE:FRAME AND MEMBERS. In some operating conditions, water may leak into the cab onto the passenger floor through the HVAC fresh air intake on the frontwall on 47,00,4900, and 5700 models. |
| DOC-1033256 | 2018-06-11. Service bulletin. STRUCTURE; SUSPENSION. SS: 1033256 - WST Frame Beaming - Rough Ride Vibration in bob tail mode |
| sbw9801 | 2018-06-11. Service bulletin. STRUCTURE. sbw9801 Paint Finish Standards |
| sbw3215 | 2018-03-13. Service bulletin. STRUCTURE. Some vehicles may have been incorrectly shimmed at the factory, and may lean slightly to the right or left. While this does not affect the operation of the vehicle, it may be visually unpleasing to many customers. |
| Body SRT | 2018-01-05. Service bulletin. STRUCTURE:BODY. Body SRT Updates -2012.12.12 |
| 12-040 | 2018-01-05. Service bulletin. STRUCTURE:BODY. 12-040-DLR Roof Fairing Removal Program |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.