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Service bulletins for the 2012 Western Star 4700

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.

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

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
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
0401-172018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. SPN 4765 FMI 0 - Exhaust Temperature Out Of Range High
0141-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 0141-17 SPN 2659 (MCM) (EPA10)
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)
0114-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 0114-17 SPN 2791 (MCM) (EPA07;EPA10)
0113-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0113-17 SPN 3361 (ACM) (EPA10)
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
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
811-122018-03-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 811-12 SPN 411-FMI 3
809-122018-03-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, DIESEL. 809-12 Removal and Installation of the GHG14 1-BOX From the Vehicle
807-122018-03-05. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 807-12 Removal and Installation of the GHG14 Diesel Exhaust Fluid Dosing Unit Inlet Screen
803-122018-03-05. Service bulletin. ENGINE. 803-12 SPN 4360-FMI 10, 15 (ACM2.1)
802-122018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 802-12 SPN 520328-FMI 7 - GHG14

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