# Service bulletin C1846

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: 10110336
- Published by NHTSA: 2017\-08\-04
- Manufacturer's number: C1846
- Manufacturer's date: 2016\-11\-04
- NHTSA component: ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## NHTSA's summary

This Campaign is being issued to address calibration issues for the ISX12 engines in certain motor coach applications. Certified repair locations are authorized to update the Engine Control Module \(ECM\) calibration any time the unit is in for maintenance or repairs, with certain restrictions on reimbursement.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10110336-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10110336-0001.pdf)

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

## Components

Engine, Transmission and driveline, Automatic transmission, Transmission control module

## Vehicles listed

- CUMMINS ISX12

JSON: [/v1/bulletins/10110336](/v1/bulletins/10110336)

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