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Service bulletin aeo18M4

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 id10146328
Published by NHTSA2018-10-29
Manufacturer's numberaeo18M4
Manufacturer's date2018-05-01
NHTSA componentEQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

aeo18M4 Field Service Campaign D18M4

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

Equipment and accessories, Transmission and driveline, Automatic transmission

Vehicles listed
FREIGHTLINER 114SD2017, 2018, 2019
FREIGHTLINER 122SD2017 to 2019
FREIGHTLINER BUSINESS CLASS M22017 to 2019
FREIGHTLINER CASCADIA2017, 2018, 2019
WESTERN STAR 47002017, 2018, 2019
WESTERN STAR 49002017, 2018, 2019
WESTERN STAR 57002017, 2018, 2019
WESTERN STAR 69002017, 2018, 2019

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

Recalls for the same vehicles and component
17V7300002017-11-17. POWER TRAIN:AUTOMATIC TRANSMISSION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TechTalk78972020-12-03. Service bulletin. Tech Talk discussion on New Cascadia no regeneration.
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
D18M4 Remanufact2018-12-10. Service bulletin. Field Service Campaign: Remanufactured Detroit? DT12? Transmission
MY18M42018-10-29. Service bulletin. MY18M4-Bulletin-02-MAY-2018 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