WenmarOpen by Wenmar Pro

Service bulletins for the 2018 Western Star 5700

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.

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

By type

By component

Only bulletins with component: Software are shown. Show all

Bulletins, newest first
17TS-05REV22020-10-21. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. Revised Technical Service Letter for Detroit DT12 TCM GHG17 Only; Bootloader Update. On Detroit DT12 equipped vehicles, it may be necessary to complete an additional step in the programming process when updating the TCM software.
aeoD18M22019-04-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:LABELS. Field Service Campaign D18M2 GHG17 GHG17 Detroit DD13® Software Reprogramming and Emission Label Replacement for Motor Coach Industries, Inc. (MCI®)
D18M22019-04-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:LABELS. Field Service Campaign-D18M2 - REVISION 1 GHG17 Detroit DD13® Software Reprogramming and Emission Label Replacement for Motor Coach Industries, Inc. (MCI®)
aeo18M12018-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM:SOFTWARE. aeo18M1 GHG14 Heavy Duty Engine Platform Vocational Application Programming
MY18M12018-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM:SOFTWARE. MY18M1a 05-MAR-2018 Vocational
0405-182018-06-18. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 0405-18 Symptom Diagnostics - Range Up or Down Shift Issue
15TL212018-01-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 15TL21 GHG17 Diagnostic Connector Update
1005-142017-11-17. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE. 1005-14 Oil Coolant Module

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