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Service bulletin 9WT98A

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 id607302
Published by NHTSA1999-09-17
Manufacturer's number9WT98A
Manufacturer's date1999-04-01
NHTSA componentPOWER TRAIN:MANUAL TRANSMISSION

NHTSA's summary

VEHICLES WITH WORLD TRANSMISSIONS CONTROLLED BU V7 OR V7A SOFTWARE CAN EXPERIENCE A CODE 54 23. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline, Manual transmission

Vehicles listed
ALLISON TRANSMISSION

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