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Service bulletins for the 2015 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.

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

By type

By component

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
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
702-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 702-15 DD15 and DD16 Delphi © Exhaust Gas Recirculation Valve Actuator
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
1110-172018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. Exhaust and Exhaust Gas Recirculation
49-0192018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. Diesel Exhaust Fluid (DEF) Pressure Line Disconnected at the Doser Connection
17TL7Rev2018-06-11. Service bulletin. ENGINE. Heavy Duty Engine Wastegate Repair Kit DKI470E16019
0401-172018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. SPN 4765 FMI 0 - Exhaust Temperature Out Of Range High
0137-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0137-17 SPN 3361 FMI 5 (ACM) (GHG17) SPN 3361 FMI 5 (ACM) (GHG14)
0120-172018-04-16. Service bulletin. ENGINE. 0120-17 Diagnostic Test - Engine Oil Leaks - Oil Developer Method
0115-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0115-17 SPN 3226 (ACM) (EPA10;GHG14)
15TS42018-03-13. Service bulletin. ENGINE AND ENGINE COOLING. 15TS4_Rev2_ EPA07 DD15 Piston Kits
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
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
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
0504-162018-03-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER. Inspection of the DD13 Turbocharger
15TS32018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 15TS3 Detroit? Coolant Change From Nitrite Organic Acid Technology
15TS102018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 15TS10Rev DD Engine Platform Coolant Filter
sbw20232018-03-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. sbw2023 Modine Copper/Brass Bolted Downflow Radiator Rebuilding
15TS132018-03-05. Service bulletin. ENGINE. 15TS13 DD Platform Oil Filter Bypass Valve
501-152018-03-05. Service bulletin. ENGINE. 501-15 Engine Lifter Brackets
506-152018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 506-15 Air Compressor Coolant Lines
512-152018-03-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 512-15 GHG14 DD15 AT Exhaust Gas Recirculation Actuator Pull Rod

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