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Service bulletins for the 2013 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.

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

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Only bulletins with component: Exhaust and emissions are shown. Show all

Bulletins, newest first
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
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
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
512-152018-03-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 512-15 GHG14 DD15 AT Exhaust Gas Recirculation Actuator Pull Rod
503-152018-03-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 503-15 DD13 Exhaust Gas Recirculation Valve Actuator
502-152018-03-05. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 502-15 Exhaust Gas Recirculation Actuator Lever
321-152018-03-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 321-15 SPN 4364 (ACM) (GHG14)
320-152018-03-05. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 320-15 SPN 4374 (ACM) (GHG14)
301-152018-03-05. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 301-15 SPN 3251 (ACM) (EPA10) and (ACM) (GHG14), 3936 (ACM)
0207-142018-01-05. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0207-14 SPN 3031 FMI 3, 4 (ACM) (EPA10 - GHG14)
0216-142018-01-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, DIESEL. 0216-14 SPN 3363 FMI 1 - ACM - EPA10 - GHG14
0221-142018-01-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0221-14 Description and Operation of the GHG14 Airless Dosing System
919-142017-10-15. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 919-14 Exhaust Gas Recirculation Flow Target Error Diagnostic - High Flow
18SP6872017-10-15. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 18SP687 18SP687 DD15/16 EGR Actuator Replacement Service Kit
08 09-162016-10-19. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0809-16 SYMPTOM DIAGNOSTICS : NOISY 1- BOX™ AFTERTREATMENT

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