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: Engine are shown. Show all
| 19TL-15 | 2019-09-28. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Tool Letter for ICC5 Programming Cable |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.