WenmarOpen by Wenmar Pro

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

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
0311-182018-06-11. Service bulletin. POWER TRAIN. 0311-18 Installation of the Main Shaft Speed Sensor
17TS112018-06-11. Service bulletin. POWER TRAIN. Detroit? DT12? Transmission Proper Moving Procedure
0406-172018-06-11. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). SPN 521221 (TCM)
849-122018-03-05. Service bulletin. POWER TRAIN. 849-12 SPN 3873-FMI 3 and 4
848-122018-03-05. Service bulletin. POWER TRAIN. 848-12 SPN 3872-FMI 3 and 4
847-122018-03-05. Service bulletin. POWER TRAIN. 847-12 SPN 3870-FMI 3 and 4
846-122018-03-05. Service bulletin. POWER TRAIN. 846-12 SPN 3869-FMI 3 and 4
845-122018-03-05. Service bulletin. POWER TRAIN. 845-12 SPN 3868-FMI 3 and 4
844-122018-03-05. Service bulletin. POWER TRAIN. 844-12 SPN 3867-FMI 3 and 4
843-122018-03-05. Service bulletin. POWER TRAIN. 843-12 SPN 3866-FMI 3 and 4
810-122018-03-05. Service bulletin. POWER TRAIN. 810-12 SPN 3842-FMI 3, 4, and 5 (CPC4)
14TL-72018-03-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 14TL-7Rev DD Platform Flywheel Housing Runout Tool W470589032100
324-152018-03-05. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; EQUIPMENT. 324-15 External Component Repair
15-0102018-03-05. Service bulletin. POWER TRAIN; FUEL SYSTEM, GASOLINE. 15-010-DLR Transmission Cooler Line Photos
sbw01162018-03-05. Service bulletin. POWER TRAIN. sbw0116 Pilot Bearing Spacer for Detroit Engines with Eaton transmissions
54-582018-02-12. Service bulletin. POWER TRAIN. 54-58 - Cracked Fuses on Powertrain Power Distribution Modules
16TS52018-02-12. Service bulletin. POWER TRAIN. 16TS5 Release of the DD Platform Bearing Failure Guide
14TS212017-11-17. Service bulletin. POWER TRAIN. 14TS21 HDEP Camshaft Position Sensor Change
811-142017-11-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 811-14 FMI 7: Internal Error with the DT12 Shift Stalk Lever
812-142017-11-17. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. 812-14 FMI 3, 4: Engine Aux. Shutdown Input Failed High and Low
1105-142017-10-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL). 1105-14 Flywheel, Ring Gear and Flywheel Housing
908-142017-10-15. Service bulletin. ENGINE; POWER TRAIN. 908-14 908-14 EGR Differential Pressure Failed (High Box)
907-142017-10-15. Service bulletin. POWER TRAIN. 907-14 Installation and Removal of the Flywheel Housing
35-72012-04-27. Service bulletin. SUSPENSION:FRONT:WHEEL BEARING; SUSPENSION:MULTIPLE AXLE; POWER TRAIN:DRIVELINE:CENTER SUPPORT BEARING. WESTERN STAR: LUBRICATE WHEEL BEARINGS, REAR DRIVE AXLES. *JS

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