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Service bulletins for the 2008 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.

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

By type

By component

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

Bulletins, newest first
0219-142018-01-05. Service bulletin. FUEL SYSTEM, OTHER. 0219-14 Metal in Fuel
0202-142018-01-05. Service bulletin. FUEL SYSTEM, OTHER. 0202-14 Symptom Diagnostics - Hard Start No Start - Two-Filter Fuel System
0215-142018-01-05. Service bulletin. FUEL SYSTEM, OTHER. 0215-14 Check for Rough Running or Stalling - Three-Filter Fuel System
813-142017-11-17. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM. 813-14 Installation of the One & Two-Piece Fuel Injector Wiring Harness - Two & Three-Filter System
18SP7032017-11-17. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; FUEL SYSTEM, GASOLINE. 18SP703 18SP703 - GHG14 KM63 GEN2 Low Pressure Fuel Pump-Two-Filter Fuel System Ki
1104-142017-10-21. Service bulletin. FUEL SYSTEM, DIESEL. 1104-14 Metal in the Fuel System
1110-142017-10-21. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES. 1110-14 EPA10 DOC Inlet Pressure Sensor
14TS262017-10-15. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE. 14TS26 Replacement of the High Pressure Fuel Pump Camshaft Oil Seal
910-142017-10-15. Service bulletin. FUEL SYSTEM, DIESEL. 910-14 Installation of the High Pressure Fuel Rail Feed Lines - Two-Filter System
916-142017-10-15. Service bulletin. FUEL SYSTEM, DIESEL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 916-14 Fuel Cooler Leak Test Procedure - Two-Filter Fuel System
909-142017-10-15. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. 909-14 Diesel Exhaust Fluid Metering Unit Air Pressure Sensor Circuit Failed High and Low
18SP7062017-10-15. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. 18SP706 Replacement of the High Pressure Fuel Pump Camshaft Oil Seal
18SP7182017-10-15. Service bulletin. FUEL SYSTEM, GASOLINE. 18SP718Rev EPA07 DD1516 Three-Filter ESOC Fuel System to Two-Filter KM59 GEN1 Fuel
09 06-162016-10-20. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. 0906-16 LOW PRESSURE FUEL PUMP
WSB-49-112014-02-13. Service bulletin. FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. WESTERN STAR: WHEN TRUCK SITS, FOR ANY EXTENDED PERIOD, WITH A DIESEL EXHAUST FLUID (DEF) SYSTEM, IT WOULD CRYSTALLIZED, IN THE TANK, AROUND FLOAT, ON DEF LEVEL SENDING UNIT TUBE AND NEEDS TO BE CLEANED. *PE
SBW-47142013-07-08. 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
SB-49-122012-06-14. 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
FSC-410A2009-11-09. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:FILLING/CHARGING; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY. WESTERN STAR SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. CERTAIN VEHICLES MAY HAVE BEEN BUILT WITH 25 INCH DIAMETER FUEL TANK LEVEL SENDER ARMS AND FLOATS THAT MAY CONTACT THE TANK WALL AND GET STUCK, POSSIBLY RESULTING IN AN INACCURATE FUEL LEVEL GAUGE READING. *PE

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