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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
0604-172019-03-25. Service bulletin. EQUIPMENT. SPN 712 (CPC) (GHG17)
0602-172019-03-25. Service bulletin. ENGINE. Cylinder Liner - Testing of the Cylinder Liner Upper O-Ring
FL7822019-03-11. Service bulletin. STEERING. Recall FL782- Detroit Steer Axle Tie Rods
ICI19-005 FL7822019-03-11. Service bulletin. STEERING. FL782 Interim Recall Ending - Final Recall Beginning
17-0232019-02-19. Service bulletin. ENGINE. New Detroit Diesel Cylinder Liner Upper O-Ring Leak Test Standard Repair Time
17TS17Rev2019-02-19. Service bulletin. EQUIPMENT. Instructions for CSC Diagnostic Support
0903-172019-02-19. Service bulletin. ENGINE. Engine Manufacturer Diagnostics
HDEP PLV Return2018-12-10. Service bulletin. FUEL SYSTEM, GASOLINE. Service information Bulletin -HDEP PLV Return Line Tool DSN470E17006
FL782 Detroit St2018-12-10. Service bulletin. STEERING. Dealer Bulletin- FL782 Detroit Steer Axle Tie Rods
DOC-10332562018-12-10. Service bulletin. SUSPENSION. Service Solution for Western Star 4900, Frame Beaming - Rough Ride Vibration in bob tail mode
Aftertreamtent F2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; EQUIPMENT. Service Information Bulletin for Aftertreamtent Failure Guide
DD13, DD15, DD162018-12-10. Service bulletin. ELECTRICAL SYSTEM. DD13, DD15, DD16 Check Engine Light Flashing or Blinking
sbw8329 HVAC Fre2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING. Service Solution for HVAC Fresh Air Intake Water Leak in certaian Western Star models-4700, 4900, and 5700
0805-18 SPN 52102018-12-10. Service bulletin. EQUIPMENT. Service Information Bulletin
DOC-10336992018-12-10. Service bulletin. POWER TRAIN. TS 1033699: DT12 Transmission Driver Interview: Shifting Complaint Questionnaire
DOC-10337682018-12-10. Service bulletin. SERVICE BRAKES. TS 1033768: Western Star Front Brake Squeal - Burnishing Procedure
sbw8329 HVAC Fre2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. Service Bulletin: HVAC Fresh Air Intake Water Leak
ICI18-022 FL7732018-12-10. Service bulletin. EQUIPMENT. FL773 ? Interim Recall Notice
sbw00142018-12-10. Service bulletin. EQUIPMENT. Operating Hours for the Customer Assistance Center
DOC-10334622018-12-10. Service bulletin. VISIBILITY. SS 1033462 - WST Cab Mounted Mekra Mirror Cover Chrome Peeling
DOC-10334462018-12-10. Service bulletin. POWER TRAIN. Vehicles with Meritor drivelines bene from a softer durometer center bearing support. Vehicle will continue to have a 1st order driveline vibration after the driveline assembly was rebalanced.
DOC-10334032018-12-10. Service bulletin. VISIBILITY/WIPER; VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR. SS 1033403 - WST Wiper Motor not Parking Issues
0505-182018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. 0505-18 SPN 3563 HDEP Inlet manifold pressure Too Low
ICI18-016 FL7562018-12-10. Service bulletin. EQUIPMENT. ICI18-016 FL756 ? Automotive Connector Terminal Removal Tool
FL7562018-12-10. Service bulletin. EXTERIOR LIGHTING:BRAKE LIGHTS. FL756 Brake Light Pressure Switches

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