# Service bulletin C1904B

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: 10118587
- Published by NHTSA: 2017\-10\-12
- Manufacturer's number: C1904B
- Manufacturer's date: 2017\-09\-28
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## NHTSA's summary

This In\-Shop Campaign authorizes certified repair locations to re\-calibrate the ECM on certain 2017 L9 CM2350 engines, any time the unit is in for maintenance or repairs, with certain restrictions on reimbursements.This is a revision to a previous communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10118587-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10118587-0001.pdf)

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

## Components

Transmission and driveline, Automatic transmission, Transmission control module

## Vehicles listed

- CUMMINS L9

JSON: [/v1/bulletins/10118587](/v1/bulletins/10118587)

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