# Service bulletin C1847A

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: 10117906
- Published by NHTSA: 2017\-09\-22
- Manufacturer's number: C1847A
- Manufacturer's date: 2017\-08\-11
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

This Campaign is being issued to address a calibration update in certain ISB6.7 engines installed in Thomas Built buses. This document authorizes repair locations to recalibrate the Engine Control Module \(ECM\) to the latest revision. This is an update to a previously submitted communciation.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10117906-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10117906-0001.pdf)

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

## Components

Electrical system

## Vehicles listed

- CUMMINS ISB6.7G

JSON: [/v1/bulletins/10117906](/v1/bulletins/10117906)

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