# Service bulletin TT8484

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: 10218844
- Published by NHTSA: 2022\-08\-29
- Manufacturer's number: TT8484
- Manufacturer's date: 2022\-07\-08
- NHTSA component: POWER TRAIN

## NHTSA's summary

Diagnostic Trouble Code P0658 Actuator Supply Circuit Low ? HSD1.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10218844-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10218844-9999.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P0658

## Vehicles listed

- ALLISON 1000 SERIES TRANSMISSION
- ALLISON 2000 SERIES TRANSMISSION
- ALLISON 3000 SERIES TRANSMISSION
- ALLISON 4000 SERIES TRANSMISSION

JSON: [/v1/bulletins/10218844](/v1/bulletins/10218844)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20TT8484&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10218844&vehicle=Service%20bulletin%20TT8484)