# Service bulletin TT8937EN

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: 10212223
- Published by NHTSA: 2022\-05\-31
- Manufacturer's number: TT8937EN
- Manufacturer's date: 2022\-01\-21
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Provides technical tip related to a improper calibration setting in the stalk switch controls

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10212223-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10212223-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- ALLISON 2000 SERIES TRANSMISSION
- ALLISON 3000 SERIES TRANSMISSION
- ALLISON 4000 SERIES TRANSMISSION

JSON: [/v1/bulletins/10212223](/v1/bulletins/10212223)

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