Service bulletins for the 2002 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.
144 on file from NHTSA, as of 2026-10-19.
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By component
Only bulletins with component: Heating and air conditioning are shown. Show all
| 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. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.