# Service bulletin 21NA089

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: 10194107
- Published by NHTSA: 2021\-05\-24
- Manufacturer's number: 21NA089
- Manufacturer's date: 2021\-04\-22
- NHTSA component: SERVICE BRAKES, AIR:DISC:CALIPER

## NHTSA's summary

This technical bulletin provides a procedure to replace the rear calipers if found packed for of mud and debris.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10194107-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10194107-9999.pdf)

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

## Components

Brakes, Brake caliper

## Vehicles listed

- 2019 to 2021 CHEVROLET SILVERADO 1500
- 2019 to 2021 GMC SIERRA 1500

## Recalls for the same vehicles and component

- [20V116000](/recalls/nhtsa/20V116000.md), 2020-02-27: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER

JSON: [/v1/bulletins/10194107](/v1/bulletins/10194107)

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