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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
sbw49112018-01-16. Service bulletin. ELECTRICAL SYSTEM. sbw4911 DEF Gauge Reading Incorrectly
sbw49102018-01-16. Service bulletin. ENGINE. sbw4910 Gentech DEF Coolant-Flow Solenoid, Testing and Replacement
sbw42052018-01-16. Service bulletin. SERVICE BRAKES, AIR:DISC:PADS. sbw4205 Bendix Air Disc Brake Thermal Overload Issues
914-122018-01-16. Service bulletin. ENGINE AND ENGINE COOLING. 914-12 GHG14 Two-Box Diesel Oxidation Catalyst.pdf
903-122018-01-16. Service bulletin. ENGINE AND ENGINE COOLING. 903-12 Installation of the Intake Throttle Valve and Adaptor.pdf
12-0272018-01-16. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 12-027-DLR Detroit and Alliance like Batteries are now interchangeable
sbw47132018-01-05. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY. sbw4713 Crank No Start, Loss of Engine Prime on Decked Vehicles
sbw20182018-01-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. sbw2018 Western Star 4900 Radiator Mounting, Update - EPA10
Body SRT2018-01-05. Service bulletin. STRUCTURE:BODY. Body SRT Updates -2012.12.12
12-0432018-01-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 12-043-DLR Helpline Available For Additional Support
12-0402018-01-05. Service bulletin. STRUCTURE:BODY. 12-040-DLR Roof Fairing Removal Program
12-0392018-01-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 12-039-DLR OWL Pre-approval's Time Frame Increases to 60 Days
12-0382018-01-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 12-038-DLR - No Problem Found - Policy Claims - During Basic Vehicle Chassis or Base Engine Coverage
15-028A2018-01-05. Service bulletin. ENGINE AND ENGINE COOLING. 15-028 New Detroit Coolant Line SRTs
15TL212018-01-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 15TL21 GHG17 Diagnostic Connector Update
901-152018-01-05. Service bulletin. ENGINE. 901-15 Oil Breather Vent
15-0292018-01-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. _Warranty Recognition Program - Coming Soon
sbw4002 40-022018-01-05. Service bulletin. TIRES. - Auto Hauler Tire Failure Due to Improper Operation and Maintenance
0239-142018-01-05. Service bulletin. FUEL SYSTEM, GASOLINE. 0239-14 High Pressure Fuel Injector Lines - Three-Filter System
0238-142018-01-05. Service bulletin. FUEL SYSTEM, GASOLINE. 0238-14 Removal of the High Pressure Fuel Injector Lines - Two-Filter
0217-142018-01-05. Service bulletin. FUEL SYSTEM, GASOLINE. 0217-14 Installation of the Fuel Injector Cup
0228-142018-01-05. Service bulletin. ENGINE. 0228-14 Engine Oil Leaks - Oil Dye Method
0219-142018-01-05. Service bulletin. FUEL SYSTEM, OTHER. 0219-14 Metal in Fuel
0229-142018-01-05. Service bulletin. ENGINE. 0229-14 Symptom Based Diagnostics - Oil Separator
0202-142018-01-05. Service bulletin. FUEL SYSTEM, OTHER. 0202-14 Symptom Diagnostics - Hard Start No Start - Two-Filter Fuel System

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