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Service bulletin 2019FA08

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 id10170126
Published by NHTSA2020-01-13
Manufacturer's number2019FA08
Manufacturer's date2019-12-17
NHTSA componentEQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT

NHTSA's summary

Announces campaign to replace the TIDB main valve body for parts that present specific symptoms

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

Vehicles listed
ALLISON 3000 SERIES TRANSMISSION
ALLISON 4000 SERIES TRANSMISSION
ALLISON B SERIES
ALLISON T SERIES

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