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Service bulletins for the 2012 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.

187 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Wiring and fuses are shown. Show all

Bulletins, newest first
DOC-10333332018-10-29. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. SS 1033333 - WST ECC Replacement Jumper Harness Installation.
SF5142018-02-12. Service bulletin. ELECTRICAL SYSTEM:WIRING. Western Star ABS Wiring - Export Only
14CSA222017-11-17. Service bulletin. ELECTRICAL SYSTEM:WIRING. 14CSA22 DTNA Chassis Wiring Diagrams

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.