# Service bulletin 21NA135

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: 10200137
- Published by NHTSA: 2021\-08\-09
- Manufacturer's number: 21NA135
- Manufacturer's date: 2021\-06\-10
- NHTSA component: COMMUNICATION: VEHICLE TO INFRASTRUCTURE

## NHTSA's summary

This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10200137-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10200137-9999.pdf)

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

## Vehicles listed

- 2019 BUICK CASCADA
- 2019 to 2021 BUICK ENCLAVE
- 2019 to 2021 BUICK ENCORE
- 2020 to 2021 BUICK ENCORE GX
- 2019 to 2021 BUICK ENVISION
- 2019 BUICK LACROSSE
- 2019 to 2020 BUICK REGAL
- 2019 CADILLAC ATS
- 2020 to 2021 CADILLAC CT4
- 2020 to 2021 CADILLAC CT5
- 2019 to 2020 CADILLAC CT6
- 2019 CADILLAC CTS
- 2019 to 2020 CADILLAC ESCALADE
- 2019 to 2021 CADILLAC ESCALADE ESV
- 2021 CADILLAC ESCALADE NA
- 2019 to 2021 CADILLAC XT4
- 2019 to 2021 CADILLAC XT5
- 2020 to 2021 CADILLAC XT6
- 2019 CADILLAC XTS
- 2019 to 2021 CHEVROLET BLAZER
- 2019 to 2021 CHEVROLET BOLT EV
- 2019 to 2021 CHEVROLET CAMARO
- 2019 to 2021 CHEVROLET COLORADO
- 2019 to 2021 CHEVROLET CORVETTE
- 2019 CHEVROLET CRUZE
- 2019 to 2021 CHEVROLET EQUINOX
- 2019 to 2021 CHEVROLET EXPRESS
- 2019 to 2020 CHEVROLET IMPALA
- 2019 to 2021 CHEVROLET MALIBU
- 2019 to 2021 CHEVROLET SILVERADO 1500
- 2019 to 2021 CHEVROLET SILVERADO 2500
- 2019 CHEVROLET SILVERADO 4500
- 2019 to 2020 CHEVROLET SONIC
- 2019 to 2021 CHEVROLET SPARK
- 2019 to 2021 CHEVROLET SUBURBAN
- 2019 to 2021 CHEVROLET TAHOE
- 2021 CHEVROLET TRAILBLAZER
- 2019 to 2021 CHEVROLET TRAVERSE
- 2019 to 2021 CHEVROLET TRAX
- 2019 CHEVROLET VOLT
- 2019 to 2021 GMC ACADIA
- 2019 to 2021 GMC CANYON
- 2019 to 2021 GMC SAVANA
- 2019 to 2021 GMC SIERRA 1500
- 2019 to 2021 GMC SIERRA 2500
- 2019 GMC SIERRA DENALI
- 2019 to 2021 GMC TERRAIN
- 2019 to 2021 GMC YUKON
- 2019 to 2021 GMC YUKON XL

JSON: [/v1/bulletins/10200137](/v1/bulletins/10200137)

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