Service bulletin 21-021-20
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 | 10175156 |
| Published by NHTSA | 2020-05-18 |
| Manufacturer's number | 21-021-20 |
| Manufacturer's date | 2020-03-20 |
| NHTSA component | ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM) |
NHTSA's summary
Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may notice the following condition:A loud whistle noise upon engine start up. Rough and/or erratic shifting between gears during normal drive cycles.
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
Electrical system, Transmission and driveline, Automatic transmission, Software, Transmission control module
| DODGE DURANGO | 2020 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
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