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Service bulletins for the 2015 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.

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

By type

By component

Bulletins, newest first
1105-142017-10-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL). 1105-14 Flywheel, Ring Gear and Flywheel Housing
18SP7082017-10-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. 18SP708Rev EPA07 10 Three-Filter Fuel
18SP7112017-10-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. 18SP711 DD15 and DD16 Axial Power Turbine Bracket Ki
14TS262017-10-15. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE. 14TS26 Replacement of the High Pressure Fuel Pump Camshaft Oil Seal
14TS252017-10-15. Service bulletin. FUEL SYSTEM, DIESEL. 14TS25 EPA10 and GHG14 Diesel Particulate Filter (DPF) Compatibility
910-142017-10-15. Service bulletin. FUEL SYSTEM, DIESEL. 910-14 Installation of the High Pressure Fuel Rail Feed Lines - Two-Filter System
918-142017-10-15. Service bulletin. FUEL SYSTEM, DIESEL. 918-14 Removal and Installation and Inspection of the Fuel Cooler Delete Bypass Plate - 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
908-142017-10-15. Service bulletin. ENGINE; POWER TRAIN. 908-14 908-14 EGR Differential Pressure Failed (High Box)
915-142017-10-15. Service bulletin. ENGINE. 915-14 Backwards Running Engine Detecte
919-142017-10-15. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 919-14 Exhaust Gas Recirculation Flow Target Error Diagnostic - High Flow
903-142017-10-15. Service bulletin. ELECTRICAL SYSTEM; ENGINE. 903-14 Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed High and Low
904-142017-10-15. Service bulletin. ELECTRICAL SYSTEM; ENGINE. 904-14 Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed High and Low
911-142017-10-15. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. 911-14 5V Sensor Supply Bank 2 Circuit Failed High
914-142017-10-15. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. 914-14 Ambient and Inlet Manifold Pressure Difference (High Box)
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
906-142017-10-15. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. 906-14 Installation of the Oil Pan
917-142017-10-15. Service bulletin. ENGINE. 917-14 Installation and Removal of the Oil Filter Stand Pipe
907-142017-10-15. Service bulletin. POWER TRAIN. 907-14 Installation and Removal of the Flywheel Housing
18SP7062017-10-15. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. 18SP706 Replacement of the High Pressure Fuel Pump Camshaft Oil Seal
18SP7012017-10-15. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE; EQUIPMENT. 18SP701Rev3 GHG14 Two-Filter Fuel System KM63 GEN2 DD15AT Engines High Pressure Fuel Feed Lines, Mounting Bracket and P-clips Service Kit

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