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Service bulletins for the 2007 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.

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

By type

By component

Bulletins, newest first
1109-142017-10-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. 1109-14 Diagnostic Tes
1104-142017-10-21. Service bulletin. FUEL SYSTEM, DIESEL. 1104-14 Metal in the Fuel System
1102-142017-10-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. 1102-14 DD13 Cylinder Head R&R
1105-142017-10-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL). 1105-14 Flywheel, Ring Gear and Flywheel Housing
1110-142017-10-21. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES. 1110-14 EPA10 DOC Inlet Pressure Sensor
18SP7072017-10-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. 18SP707Rev EPA07/10 Three-Filter Fuel System DD13 High Pressure Fuel Feed Lines, Mounting Bracket and P-clips Service Kit
18SP7082017-10-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. 18SP708Rev EPA07 10 Three-Filter Fuel
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
912-142017-10-15. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE. 912-14 Coolant in Oil
913-142017-10-15. Service bulletin. ENGINE. 913-14 Checking for Poor Engine Brake Performance
905-142017-10-15. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING. 905-14 Coolant Level Circuit Failed
915-142017-10-15. Service bulletin. ENGINE. 915-14 Backwards Running Engine Detecte
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
920-142017-10-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. 920-14 Additional Cleaning and Preparing
917-142017-10-15. Service bulletin. ENGINE. 917-14 Installation and Removal of the Oil Filter Stand Pipe
18SP7062017-10-15. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. 18SP706 Replacement of the High Pressure Fuel Pump Camshaft Oil Seal
18SP6872017-10-15. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 18SP687 18SP687 DD15/16 EGR Actuator Replacement Service Kit
18SP7182017-10-15. Service bulletin. FUEL SYSTEM, GASOLINE. 18SP718Rev EPA07 DD1516 Three-Filter ESOC Fuel System to Two-Filter KM59 GEN1 Fuel
SBW00042017-06-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SBW0004 WESTERN STAR COURTESY ENGINEERING POLICY
1021-162017-06-01. Service bulletin. ENGINE AND ENGINE COOLING. 1021-16 SPN 110 (MCM)(EPA07EPA07;GHG14), SPN 110 (CPC)(GHG14)
1018-162017-06-01. Service bulletin. ENGINE. 1018-16 SYMPTOM DIAGNOSTICS - NOISE
1017-162017-06-01. Service bulletin. ENGINE. 1017-16 ENGINE MODEL AND SERIAL NUMBER DESIGNATION
16TL202017-05-31. Service bulletin. ENGINE. 16TL20 HEAVY DUTY ENGINE VALVE STEM SEAL INSTALLING DRIFT AND SLEEVE

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