# Service bulletin C2128B

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: 10173915
- Published by NHTSA: 2020\-04\-20
- Manufacturer's number: C2128B
- Manufacturer's date: 2020\-03\-24
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

This is a cancellation notification of C2128. Certain B6.7 CM2350 B121B engines were shipped without a fuel heater; a plug was installed in place of a fuel heater. This Campaign authorizes certified repair locations to install a fuel heater in place of the plug, change the fuel heater wiring harness polarity by switching wiring terminal locations within the fuel heater connector, and to replace or install a new fuse in the fuel heater circuit. This field action is a commercial \(non\-safety\) action to properly re\-enable the fuel heater functionality that was removed to correct a recall condition as described in the recall report for NHTSA recall 19E\-020. This is an update to a previously submitted communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10173915-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10173915-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- CUMMINS ISB6.7

JSON: [/v1/bulletins/10173915](/v1/bulletins/10173915)

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