Service bulletin TT7693EN
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 | 10156800 |
| Published by NHTSA | 2019-04-08 |
| Manufacturer's number | TT7693EN |
| Manufacturer's date | 2015-08-24 |
| NHTSA component | ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL |
NHTSA's summary
Tech Tip for diagnosing and remedying C3/C4 bonded piston issue
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, Equipment and accessories, Labels and manuals, Transmission and driveline, Automatic transmission
| ALLISON 3000 SERIES TRANSMISSION | |
|---|---|
| ALLISON B300 | |
| ALLISON B400 | |
| ALLISON T SERIES |
Listing a model year does not mean every vehicle of it is concerned: the document says which.