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Service bulletin D18M4 Remanufact

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10151006
Published by NHTSA2018-12-10
Manufacturer's numberD18M4 Remanufact
Manufacturer's date2018-08-10
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

Field Service Campaign: Remanufactured Detroit? DT12? Transmission

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline, Automatic transmission

Vehicles listed
FREIGHTLINER CASCADIA2016, 2017
WESTERN STAR 48002016, 2017
WESTERN STAR 49002016, 2017
WESTERN STAR 57002016, 2017

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
TechTalk76922020-11-03. Service bulletin. Tech Talk discussion for wiring a solenoid and switch for a 2016 Cascadia with PTO on a DT12 transmission.
sb601632019-04-08. Service bulletin. Adding Floor Support for Vehicles with Automatic or Automated Transmissions
0702-172019-04-01. Service bulletin. Diagnostics
0703-172019-04-01. Service bulletin. Diagnostics
0704-172019-04-01. Service bulletin. Diagnostics
0705-172019-04-01. Service bulletin. Diagnostics
MY18M42018-10-29. Service bulletin. MY18M4-Bulletin-02-MAY-2018 Field Service Campaign D18M4
aeo18M42018-10-29. Service bulletin. aeo18M4 Field Service Campaign D18M4
0402-182018-10-01. Service bulletin. 0402-18 SPN 625 (CPC) (GHG14)
0405-182018-06-18. Service bulletin. 0405-18 Symptom Diagnostics - Range Up or Down Shift Issue