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Service bulletins for the 2018 Western Star 6900

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.

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

By type

By component

Bulletins, newest first
0135-172018-04-16. Service bulletin. SERVICE BRAKES; ENGINE. 0135-17 Diagnostic Test - Engine Brake Test Procedure
0134-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 0134-17 Medium Duty - DD5 GHG17 - Exhaust and EGR - EGR Cooler Lower Bracket
0133-172018-04-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 0133-17 SPN 625 (CPC) (GHG17)
0132-172018-04-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 0132-17 SPN 521005 (CPC3) (GHG17)
0131-172018-04-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 0131-17 SPN 521054 (CPC3) (GHG17)
0129-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. 0129-17 SPN 102 (MCM) (GHG17)
0127-172018-04-16. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES; FUEL SYSTEM, OTHER. 0127-17 SPN 1077 FMI 14 (GHG14) (GHG17) (MCM)
0126-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. 0126-17 SPN 520295 (MCM) (GHG17) - Smart Remote Actuator 1
0125-172018-04-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. 0125-17 SPN 4817 (MCM) (GHG17)
0124-172018-04-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 0124-17 SPN 3720 FMI 14 - (MCM) (GHG17)
0123-172018-04-16. Service bulletin. ENGINE. 0123-17 SPN 1483 (CPC3) (GHG17)
0122-172018-04-16. Service bulletin. ENGINE. 0122-17 SPN 521058 (CPC3) (GHG17)
0121-172018-04-16. Service bulletin. ENGINE. 0121-17 SPN 521050 (CPC3) (GHG17)
0120-172018-04-16. Service bulletin. ENGINE. 0120-17 Diagnostic Test - Engine Oil Leaks - Oil Developer Method
0119-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 0119-17 SPN 3217 (MCM) (GHG17)
0117-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 0117-17 SPN 5928 (MCM) (GHG17) - EGR H Bridge circuit diagnostics
0116-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 0116-17 SPN 4752 (MCM) (GHG17) - EGR Cooler Efficiency Fault Codes
0111-172018-04-16. Service bulletin. FUEL SYSTEM, DIESEL. 0111-17 SPN 1077 (MCM)(GHG17)
0107-172018-04-16. Service bulletin. ENGINE. 0107-17 Diagnostic Test - Engine Oil Leaks - Oil Developer Method
0106-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 0106-17 SPN 520296 (MCM) (GHG14) and SPN 520296 (MCM) (GHG17)
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.
12-0222018-03-05. Service bulletin. UNKNOWN OR OTHER. 12-022-DLR Daimler Trucks Remarketing Corporation (DTR) Now Requires Pre-approval for Repairs $1,200 (USD) and Greater
14TL-72018-03-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 14TL-7Rev DD Platform Flywheel Housing Runout Tool W470589032100
15TL62018-03-05. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. 15TL6 W470589129100 ? HDEP HP Fuel Rail Test Caps
15TS32018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 15TS3 Detroit? Coolant Change From Nitrite Organic Acid Technology

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