Other TT9444
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.
| Type | Other |
|---|---|
| NHTSA id | 11029905 |
| Published by NHTSA | 2026-03-07 |
| Manufacturer's number | TT9444 |
| Manufacturer's date | 2026-02-04 |
| NHTSA component | POWER TRAIN |
| Manufacturer's system | Transmission |
NHTSA's summary
Instructions for requesting permission to activate a calibration setting for 6th generation transmission control modules to enable fuel economy and GHG benefits of neutral at stop on a vocational vehicle
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
| 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.