Service bulletin TSB210020-011320
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 | 10212542 |
| Published by NHTSA | 2022-05-31 |
| Manufacturer's number | TSB210020-011320 |
| Manufacturer's date | 2022-01-13 |
| NHTSA component | POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ELECTRICAL SYSTEM |
NHTSA's summary
This Technical Service Bulletin describes the verification and resolution of an issue with Allison Transmission® Fault P2637 being caused by the Engine Control Module (ECM) Calibration. Cummins is releasing ECM calibration revisions that reduce occurrences of Allison Transmission® fault P2637.
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, Engine, Transmission and driveline, Automatic transmission, Engine control module
Trouble codes named
P2637
| CUMMINS B6.7 | |
|---|---|
| CUMMINS L9 | |
| CUMMINS X15 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.