Service bulletin TT7478EN
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 | Service bulletin |
|---|---|
| NHTSA id | 10155494 |
| Published by NHTSA | 2019-04-01 |
| Manufacturer's number | TT7478EN |
| Manufacturer's date | 2014-04-25 |
| NHTSA component | POWER TRAIN; ENGINE |
NHTSA's summary
Tech Tip concerning Navistar Required 5th Gen Transmission Control Module (TCM) Reprogram to address a low power/poor performance concern
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
Engine, Transmission and driveline
| ALLISON TRANSMISSION | |
|---|---|
| NAVISTAR ENGINE & ENGINE COOLING |
Listing a model year does not mean every vehicle of it is concerned: the document says which.