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Service bulletins for the 2018 Western Star 5900

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.

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

By type

By component

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
19CSA-12 BCT2019-09-09. Service bulletin. ELECTRICAL SYSTEM. PowerNet Assessment Tool Repair Procedure
19TS-62019-08-08. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. The modified parked regeneration strategy has been standard on GHG17 units since the start of GHG17 production and was added to EPA10 and GHG14 units with a software update. The modified regeneration utilizes an improved strategy to clean the DOC inlet face and reduce downtime due to DOC face plugging.
sb543132019-08-06. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin provided to customers regarding installation of a new MCM 21-pin jumper harness.
sbw540652019-04-08. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. GHG17 Heavy Duty Engine Platform Vehicle Dash Oil Pressure Gauge
sbw540652019-04-08. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. GHG17 Heavy Duty Engine Platform Vehicle Dash Oil Pressure Gauge
sbw540702019-03-18. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin- Chassis ECU Programming
18-032-NoDefectF2018-12-10. Service bulletin. ELECTRICAL SYSTEM. Warranty Bulletin for charge back exemtions

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