# Over\-the\-air update N25\-250552

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: Over\-the\-air update
- NHTSA id: 11028977
- Published by NHTSA: 2026\-02\-24
- Manufacturer's number: N25\-250552
- Manufacturer's date: 2026\-02\-05
- Campaign id or software version: N25\-250552
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: TCP: TCP \(Telematics Connectivity Platform\) OnStar

## NHTSA's summary

Improvements to OnStar functionality. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028977-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028977-9999.pdf)

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

## Vehicles listed

- 2021 to 2022 BUICK ENCLAVE
- 2021 to 2022 BUICK ENCORE
- 2021 to 2022 CADILLAC XT4
- 2021 to 2022 CADILLAC XT5
- 2021 to 2022 CADILLAC XT6
- 2021 to 2022 CHEVROLET BLAZER
- 2022 CHEVROLET BOLT EUV
- 2021 to 2022 CHEVROLET BOLT EV
- 2021 to 2022 CHEVROLET CAMARO
- 2021 to 2022 CHEVROLET EQUINOX
- 2021 to 2022 CHEVROLET MALIBU
- 2021 to 2022 CHEVROLET SILVERADO 1500
- 2021 to 2022 CHEVROLET SILVERADO 2500
- 2021 to 2022 CHEVROLET TRAILBLAZER
- 2021 to 2022 CHEVROLET TRAVERSE
- 2021 to 2022 GMC ACADIA
- 2021 to 2022 GMC SIERRA 1500
- 2021 to 2022 GMC SIERRA 2500
- 2021 to 2022 GMC TERRAIN

JSON: [/v1/bulletins/11028977](/v1/bulletins/11028977)

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