# Service bulletin 18NA049

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: 10137579
- Published by NHTSA: 2018\-05\-21
- Manufacturer's number: 18NA049
- Manufacturer's date: 2018\-04\-27
- NHTSA component: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT

## NHTSA's summary

This technical bulletin advises the technician to replace the rear diff carrier if heavy corrosion caused noise, cracking and/or leaking to correct the customers concerns.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10137579-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10137579-0001.pdf)

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

## Components

Transmission and driveline, Differential

## Vehicles listed

- 2013 to 2016 BUICK ENCORE
- 2013 to 2016 CHEVROLET TRAX

## Other bulletins for the same vehicles and component

- [18NA049](/bulletins/10137333.md), 2018-05-21, Service bulletin: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT; EQUIPMENT:MECHANICAL. This technical bulletin advises the technician to replace the rear diff carrier if heavy corrosion caused noise, cracking and/or leaking to correct the customers concerns.

JSON: [/v1/bulletins/10137579](/v1/bulletins/10137579)

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