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Service bulletins for the 2018 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.

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

By type

By component

Bulletins, newest first
608-132018-06-18. Service bulletin. FUEL SYSTEM, DIESEL; FUEL SYSTEM, GASOLINE. 608-13 High Pressure Fuel Flange-Two-Filter System
sbw540652018-06-18. Service bulletin. ENGINE; EQUIPMENT. GHG17 Heavy Duty Engine Platform Vehicle Dash Oil Pressure Gauge
sbw54392018-06-18. Service bulletin. ELECTRICAL SYSTEM. RX Module Fault Codes
707-132018-06-18. Service bulletin. FUEL SYSTEM, DIESEL; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES; FUEL SYSTEM, GASOLINE. 707-13 Description and Operation of the HC Doser Fuel Supply Pressure Control Valve - Two Filter System
710-132018-06-18. Service bulletin. FUEL SYSTEM, DIESEL; FUEL SYSTEM, GASOLINE. 710-13 Metal in the Fuel System - Three-Filter Fuel System
712-132018-06-18. Service bulletin. FUEL SYSTEM, DIESEL; FUEL SYSTEM, GASOLINE. 712-13 Fuel Cooler Leak Test Procedure - Three-Filter Fuel System
705-132018-06-18. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL. 705-13 Test-E Three-Filter Fuel System
702-132018-06-18. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL. 702-13 Test E Two-Filter Fuel System
711-132018-06-18. Service bulletin. ENGINE; ELECTRICAL SYSTEM. 711-13 SPN 100-FMI 4 - ALL YEARS
717-132018-06-18. Service bulletin. EQUIPMENT; ENGINE; EQUIPMENT:MECHANICAL; EQUIPMENT ADAPTIVE/MOBILITY. 717-13 Oil Pan
sbw54552018-06-18. Service bulletin. EQUIPMENT. sbw5455 Virtual Technician Retrofit
0203-17 SPN 57412018-06-18. Service bulletin. ENGINE. 0203-17 SPN 5741 FMI 13 (GHG17) (MCM)
0208-17 SPN 4122018-06-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 0208-17 SPN 412 (MCM) (GHG17)
0206-17 SPN 52102018-06-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0206-17_ SPN 521049 (MCM) (GHG17)
0204-17 SPN 52102018-06-18. Service bulletin. ELECTRICAL SYSTEM. 0204-17 SPN 521050 (MCM) (GHG17)
0205-17 SPN 52102018-06-18. Service bulletin. ELECTRICAL SYSTEM. 0205-17 SPN 521052 (MCM) (GHG17)
18SP7332018-06-18. Service bulletin. ENGINE. 18SP733 GHG17 Medium Duty DD8 Oil Filter Kit
sbw54302018-06-18. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. sbw5430 Disconnecting or Connecting Daytime Running Lights
601-132018-06-18. Service bulletin. ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 601-13 Engine Oil Capacities
sbw49102018-06-18. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. sbw4910 Gentech DEF Coolant-Flow Solenoid, Testing and Replacement
0405-182018-06-18. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 0405-18 Symptom Diagnostics - Range Up or Down Shift Issue
0404-182018-06-18. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. 0404-18 GHG17 DD8 - Aftertreatment Systems - Diesel Particulate Filter End Cap
0402-182018-06-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ELECTRICAL SYSTEM. 0402-18 SPN 625 (CPC) (GHG14)
0401-182018-06-18. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 0401-18 SPN 1231 (MCM) (EPA10 GHG14)
ICI18-0142018-06-18. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. ICI18-014 Owner Notice ? Kidde Fire Extinguisher Recall

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