Service bulletins for the 2004 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.
156 on file from NHTSA, as of 2026-10-19.
By type
By component
| SBW-4714 | 2013-07-08. Service bulletin. FUEL SYSTEM, GASOLINE. WESTERN STAR: FUEL TANKS ROTATING IN SADDLES. ANTI-SLIP MATERIAL MAY NEED TO BE INSTALLED, OR AN ADDITIONAL STRIP OF RUBBER. *JS |
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| SB-49-12 | 2012-06-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL. WESTERN STAR: AROUND THE DIESEL EXHAUST FLUID (DEF) AN EXCESSIVE AMOUNT OF CRYSTAL OR POWDER BUILT UP INDICATES A LEAK CAUSED BY EVAPORATION OF DEF EXPOSED TO AIR AND/OR DAMPNESS. *PE |
| 35-7 | 2012-04-27. Service bulletin. SUSPENSION:FRONT:WHEEL BEARING; SUSPENSION:MULTIPLE AXLE; POWER TRAIN:DRIVELINE:CENTER SUPPORT BEARING. WESTERN STAR: LUBRICATE WHEEL BEARINGS, REAR DRIVE AXLES. *JS |
| FL-581-AB | 2011-08-08. Service bulletin. STEERING:LINKAGES:ARM:IDLER AND ATTACHMENT. DAIMLER TRUCK SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. A STEERING COMPONENT MAY CRACK AND POSSIBLY BREAK UNDER SEVERE STEERING CONDITIONS. THIS MAY RESULT IN LESS STEERING CONTROL. *RM |
| SB-88-11 | 2009-10-14. Service bulletin. STRUCTURE:BODY:HOOD. WESTERN STAR TRUCK: SOME TRUCKS (4900FA, 123BBC) WITH HOOD SALES CODE 644-002, MAY DEVELOP CRACKS AT THE INNER FENDER, NEAR THE NUTPLATE FOR THE HOOD GUIDE. THE STEEL PIVOT STRUCTURE CAN ALSO CRACK, OUTBOARD OF THE HOOD PIVOT CLEVIS. NO MODEL YEARS LISTED. *PE |
| 355 | 2007-09-28. Service bulletin. SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY. ARVINMERITOR REAR DRIVE AXLE LOCK SCREWS. *KB |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.