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Service bulletin TT9076

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 id10235170
Published by NHTSA2023-05-01
Manufacturer's numberTT9076
Manufacturer's date2023-03-08
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

Service tip related to diagnostic code in 6th generation software in certain 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

Electrical system, Software

Vehicles listed
ALLISON DIV ALLISON DIV

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