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Service bulletins for the 2012 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.

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

By type

By component

By topic

Bulletins, newest first
144-132018-06-11. Service bulletin. FUEL SYSTEM, DIESEL. 144-13 Removal and Installation of the GHG14 Diesel Exhaust Fluid Lines
sbw09032018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. sbw0903 EPA10 Cummins ISX Air Intake Heat Shield Removal
15TS82018-06-11. Service bulletin. FUEL SYSTEM, DIESEL. 15TS8 EPA10 and GHG14 Diesel Particulate Filter (DPF) Compatibility
15TS62018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 15TS6 Replacement of the High Pressure Fuel Pump Camshaft Oil Seal
0204-152018-06-11. Service bulletin. EQUIPMENT. 0204-15 Symptom Diagnostics: Noisy One-Box Aftertreatment
0202-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 0202-15 EPA10 and GHG14 Diesel Oxidation Catalyst Face Cleaning
0203-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 0203-15 Oil Filter Stand Pipe
15TS152018-06-11. Service bulletin. POWER TRAIN. 15TS15Rev Detroit? DT12? Transmission Proper Towing Procedure
15TS14 GHG142018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 15TS14 GHG14 DD Engine Cylinder Liner Seal Replacement
708-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 708-15 High Pressure Fuel Pump Camshaft Oil Seal - Two-Filter System
711-152018-06-11. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. 711-15 High Pressure Fuel Pump Camshaft Oil Seal - Three-Filter System
704-152018-06-11. Service bulletin. EQUIPMENT. 704-15 SPN 4364 (ACM)(EPA10)
706-152018-06-11. Service bulletin. EQUIPMENT. 706-15 SPN 1323 (MCM) (GHG14) SPN 1324 (MCM) (GHG14) SPN 1325
702-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 702-15 DD15 and DD16 Delphi © Exhaust Gas Recirculation Valve Actuator
703-152018-06-11. Service bulletin. FUEL SYSTEM, GASOLINE. 703-15 GHG14 DD15 AT Exhaust Gas Recirculation Valve Actuator
sbw54632018-06-11. Service bulletin. EQUIPMENT. sbw5463 Nexiq USB-Link Upgrade and Diagnostic Connector
802-152018-06-11. Service bulletin. POWER TRAIN. 802-15 SPN 520970 FMI 7 (TCM)
801-152018-06-11. Service bulletin. POWER TRAIN. 801-15 SPN 520999 FMI 7 (TCM)
805-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 805-15 FMI 0: Selective Catalyst Reduction Outlet Temperature High
803-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 803-15 Removal of the Camshaft Housing
sbw49112018-06-11. Service bulletin. ELECTRICAL SYSTEM. sbw4911 DEF Gauge Reading Incorrectly
1102-172018-06-11. Service bulletin. ELECTRICAL SYSTEM. SPN 157 (MCM) (GHG17)
1105-172018-06-11. Service bulletin. FUEL SYSTEM, DIESEL. EPA10, GHG14 and GHG17 Diesel Particulate Filters
1110-172018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. Exhaust and Exhaust Gas Recirculation
sbw54012018-06-11. Service bulletin. EXTERIOR LIGHTING. sbw5401 Turn Signal and Brake Override Circuit

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