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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
1210-142018-03-13. Service bulletin. EQUIPMENT. 1210-14 Cylinder Head
1205-152018-03-13. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. 1205-15 Selective Catalyst Reduction (SCR) Inlet Temperature Sensor
1201-152018-03-13. Service bulletin. EQUIPMENT; ENGINE. 1201-15 Crankshaft and Bearings
sbw88132018-03-13. Service bulletin. STRUCTURE:BODY:HOOD. Reducing Excessive Hood Opening Effort, 4900 Models
0514-162018-03-13. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). Cleaning of the Exhaust Gas Recirculation Venturi Pipe Delta P Sensor Ports
0505-162018-03-13. Service bulletin. FUEL SYSTEM, OTHER. Metal in the Fuel - Three- Filter Fuel System
0507-162018-03-13. Service bulletin. ENGINE. FMI 5 Oil Pressure Sensor Stuck High
0502-162018-03-13. Service bulletin. ENGINE. FMI 3 Engine Oil Pressure Sensor Circuit Failed High
0513-162018-03-13. Service bulletin. VEHICLE SPEED CONTROL:ACCELERATOR PEDAL. FMI 2, 3, 4 Remote Accelerator Pedal Supply Voltage
0510-16 SPN 26232018-03-13. Service bulletin. EQUIPMENT:ELECTRICAL. SPN 2623 (CPC)(GHG17), SPN 2623 (CPC)(GHG14), and SPN 2623 (CPC)(EPA07 EPA10 GHG14)
0504-162018-03-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER. Inspection of the DD13 Turbocharger
18SP726rev2018-03-13. Service bulletin. FUEL SYSTEM, GASOLINE. 18SP726 ? EPA10 GHG14 Two-Filter Fuel System KM59 GEN1 DD13 High Pressure Fuel Fee
sbw32152018-03-13. Service bulletin. STRUCTURE. Some vehicles may have been incorrectly shimmed at the factory, and may lean slightly to the right or left. While this does not affect the operation of the vehicle, it may be visually unpleasing to many customers.
sbw42062018-03-05. Service bulletin. SERVICE BRAKES. sbw4206 Brake Shimmy - Meritor SteeLite X30 Brake Drum With Excessive Runout
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
842-122018-03-05. Service bulletin. ELECTRICAL SYSTEM. 842-12 SPN 3864-FMI 3 and 4 - GHG14
830-122018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 830-12 SPN 520326-FMI 4 - GHG14
818-122018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 818-12 SPN 520296-FMI 19 and 31 - GHG14
815-122018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 815-12 Installation of the Oil Cooler

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