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Service bulletin TT7400EN

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 id10155488
Published by NHTSA2019-04-01
Manufacturer's numberTT7400EN
Manufacturer's date2013-10-10
NHTSA componentENGINE; VEHICLE SPEED CONTROL

NHTSA's summary

Tech Tip concerning Vehicle Acceleration Control on Freightliner Vehicles

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

Engine, Throttle and cruise control

Vehicles listed
ALLISON 2000 SERIES TRANSMISSION
ALLISON 3000 SERIES TRANSMISSION
ALLISON 4000 SERIES TRANSMISSION

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