# Service bulletin TT7235EN

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: 10156777
- Published by NHTSA: 2019\-04\-08
- Manufacturer's number: TT7235EN
- Manufacturer's date: 2012\-05\-03
- NHTSA component: ENGINE

## NHTSA's summary

Tech tip related to engine calibration triggering DTC 65\-25

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2012/MC-10156777-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2012/MC-10156777-9999.pdf)

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

## Components

Engine

## Vehicles listed

- ALLISON H 40 EP TRANSMISSION
- ALLISON H 50 EP TRANSMISSION

JSON: [/v1/bulletins/10156777](/v1/bulletins/10156777)

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