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Service bulletin TT8819

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 id10189170
Published by NHTSA2021-03-22
Manufacturer's numberTT8819
Manufacturer's date2021-02-09
NHTSA componentAIR BAGS

NHTSA's summary

Service tip for transmissions with "check trans" light in vehicles equipped with certain engines

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

Air bags

Vehicles listed
ALLISON DIV ALLISON DIV

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