Service bulletin TIB-26-023
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 | 10048500 |
| Published by NHTSA | 2012-12-20 |
| Manufacturer's number | TIB-26-023 |
| Manufacturer's date | 2012-11-06 |
| NHTSA component | ELECTRICAL SYSTEM:SOFTWARE; ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION |
NHTSA's summary
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. TRANSMISSION DOES NOT AUTOMATICALLY UPSHIFT WHEN HIGH IDLE SPEED OF ENGINE IS EXCEEDED DUE TO LACK OF PROPER CALIBRATION OF TRANSMISSION FOR-ENGINE. MODELS 2010-2012 T660, T700 AND T800. *PE
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
Electrical system, Engine, Transmission and driveline, Automatic transmission, Software
| KENWORTH T660 | 2010 to 2012 |
|---|---|
| KENWORTH T700 | 2010 to 2012 |
| KENWORTH T800 | 2010 to 2012 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.