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Other SIL 09-TR-24

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)
TypeOther
NHTSA id11003809
Published by NHTSA2024-07-08
Manufacturer's numberSIL 09-TR-24
Manufacturer's date2024-05-23
Campaign id or software versionSIL 09-TR-24
NHTSA componentPOWER TRAIN
Manufacturer's systemTransmission

NHTSA's summary

Servicing information for updating TCM software to address reports related to shift quality at low speeds

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

Transmission and driveline

Vehicles listed
ALLISON 1000 SERIES TRANSMISSION
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.