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: Lighting are shown. Show all
| TechTalk8106 | 2021-03-03. Service bulletin. EXTERIOR LIGHTING. Tech Talk discussion on 2020 Western Star 4800 signal lights dim to start. |
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| TechTalk7698 | 2020-10-01. Service bulletin. EXTERIOR LIGHTING; SERVICE BRAKES, HYDRAULIC. Tech Talk discussion on dim brake lights. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.