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Service bulletins for the 2017 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.

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

By type

By component

Bulletins, newest first
FL7662018-10-29. Service bulletin. EQUIPMENT; POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY. Improperly installed power stud may contact the bulkhead, resulting in potential arcing, which may increase the risk of fire.
FL7562018-10-29. Service bulletin. SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, AIR; ELECTRICAL SYSTEM. Brake Light Pressure switch may not activate the brake lights with a light application of the brake pedal.
DOC-10333542018-10-29. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE. SS 1033354 Remanufactured Engine Blocks with Closed Fuel Cooler Return Ports DD Engines
DOC-10333332018-10-29. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. SS 1033333 - WST ECC Replacement Jumper Harness Installation.
0312-182018-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT. 0312-18 Installation Output Shaft Seal
0311-182018-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT. 0311-18 Installation of the Main Shaft Speed Sensor
aeo18M12018-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM:SOFTWARE. aeo18M1 GHG14 Heavy Duty Engine Platform Vocational Application Programming
MY18M12018-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM:SOFTWARE. MY18M1a 05-MAR-2018 Vocational
FL7512018-10-29. Service bulletin. STEERING. FL751 Dana Front Steer Axles
D17M2-REV2018-10-29. Service bulletin. ENGINE AND ENGINE COOLING. D17M2-REV GHG17 Heavy Duty Engine Platform Front Engine Lifter Bracket
D17M12018-10-29. Service bulletin. FUEL SYSTEM, DIESEL. D17M1 17M1 GHG17 DD15 Model Year 2016 Diesel Particulate Filter (DPF)
0405-182018-10-01. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION:COLUMN SHIFT ASSEMBLY; POWER TRAIN. 0405-18 Symptom Diagnostics - Range Up or Down Shift Issue
0404-182018-10-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0404-18 GHG17 DD8 - Aftertreatment Systems - Diesel Particulate Filter End Cap
0402-182018-10-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0402-18 SPN 625 (CPC) (GHG14)
0401-182018-10-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0401-18 SPN 1231 (MCM) (EPA10 GHG14)
ICI18-0142018-10-01. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. ICI18-014 Owner Notice ? Kidde Fire Extinguisher Recall
FL7562018-10-01. Service bulletin. EXTERIOR LIGHTING; EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH. FL756 Brake Light Pressure Switches
FL7502018-10-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. FL750 Emissions Recall - Ambient Air Temperature Sensors
102-152018-06-25. Service bulletin. FUEL SYSTEM, GASOLINE. 102-15 High Pressure Fuel Pump - Two-Filter System
0107-152018-06-25. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 0107-15 Enhanced Steam Clean
sbw20182018-06-25. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. sbw2018 Western Star 4800 and 4900 Radiator Mounting
33-42018-06-25. Service bulletin. POWER TRAIN. 33-4- Bearing Spacer Replacement, ConMet PreSet Steer Hubs
35-112018-06-25. Service bulletin. POWER TRAIN. 35-11 - Bearing Spacer Replacement, ConMet PreSet Drive Hubs
0323-172018-06-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. (MCM) (GHG17)
0328-172018-06-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. (ACM) (GHG17)

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