Service bulletins for the 2020 Western Star 4800
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.
87 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. |
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| 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. |
| 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. |
| SBW98-1 | 2019-10-30. Service bulletin. STRUCTURE. Service bulletin updating the Important Information section and adding instructions for proper visual inspection distance for paint finish standards. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.