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Service bulletins for the 2016 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.

718 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
0609-172019-03-25. Service bulletin. EQUIPMENT; ENGINE. SPN 3226 (ACM) (GHG17)
0602-172019-03-25. Service bulletin. ENGINE. Cylinder Liner - Testing of the Cylinder Liner Upper O-Ring
17-0232019-02-19. Service bulletin. ENGINE. New Detroit Diesel Cylinder Liner Upper O-Ring Leak Test Standard Repair Time
0902-172019-02-19. Service bulletin. ENGINE. SPN 3556 (ACM) (GHG14)
0903-172019-02-19. Service bulletin. ENGINE. Engine Manufacturer Diagnostics
1001-18 Engine R2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING. Engine Replacement Procedures
Emission Recall2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Emission Recall D18R5 GHG17 DD Platform Model Years 2016-2018 Software Reprogramming For California Onboard Diagnostics
D18M2 GHG17 Detr2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING. Field Service Campaign D18M2 GHG17 Detroit? DD13® Software Reprogramming and Emission Label Replacement for Motor Coach Industries, Inc. (MCI®)
Aftertreamtent F2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; EQUIPMENT. Service Information Bulletin for Aftertreamtent Failure Guide
sbw8329 HVAC Fre2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING. Service Solution for HVAC Fresh Air Intake Water Leak in certaian Western Star models-4700, 4900, and 5700
sbw8329 HVAC Fre2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. Service Bulletin: HVAC Fresh Air Intake Water Leak
0505-182018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. 0505-18 SPN 3563 HDEP Inlet manifold pressure Too Low
0503-182018-12-10. Service bulletin. EQUIPMENT; ENGINE. 0503-18 Relative Cylinder Compression Test
0502-182018-12-10. Service bulletin. ENGINE AND ENGINE COOLING. 0502-18 Symptom Diagnostics - Low Engine Coolant Temperature
18SP7342018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER. 18SP734 18SP734?GHG14 DD15AT Turbocharger
D17M1 GHG17 DD152018-12-10. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. Field Service Campaign: GHG17 DD15 Model Year 2016 Diesel Particulate Filter (DPF)
0505-182018-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. 0505-18 SPN 3563 HDEP Inlet manifold pressure Too Low
0503-182018-10-29. Service bulletin. ENGINE; EQUIPMENT. 0503-18 Relative Cylinder Compression Test
0502-182018-10-29. Service bulletin. ENGINE AND ENGINE COOLING. 0502-18 Symptom Diagnostics - Low Engine Coolant Temperature
18SP7342018-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. 18SP734 18SP734?GHG14 DD15AT Turbocharger
DOC-10333542018-10-29. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE. SS 1033354 Remanufactured Engine Blocks with Closed Fuel Cooler Return Ports DD Engines
DOC-10333332018-10-29. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. SS 1033333 - WST ECC Replacement Jumper Harness Installation.
0312-182018-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT. 0312-18 Installation Output Shaft Seal
0311-182018-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT. 0311-18 Installation of the Main Shaft Speed Sensor
aeo18M12018-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM:SOFTWARE. aeo18M1 GHG14 Heavy Duty Engine Platform Vocational Application Programming

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