Buick Enclave 2021–2023 — technical service bulletin
Bulletin N25-250552 · NHTSA communication 11030532 · issued Mar 21, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2021–2023
model years
53
vehicle entries
Official summary
Improvements to OnStar functionality.
Vehicles covered
- 2021 Buick Enclave
- 2022 Buick Enclave
- 2023 Buick Enclave
- 2021 Buick Encore
- 2022 Buick Encore
- 2023 Buick Encore
- 2021 Cadillac XT4
- 2022 Cadillac XT4
- 2023 Cadillac XT4
- 2021 Cadillac XT5
- 2022 Cadillac XT5
- 2023 Cadillac XT5
- 2021 Cadillac XT6
- 2022 Cadillac XT6
- 2023 Cadillac XT6
- 2021 Chevrolet Blazer
- 2022 Chevrolet Blazer
- 2023 Chevrolet Blazer
- 2022 Chevrolet Bolt Euv
- 2023 Chevrolet Bolt Euv
- 2021 Chevrolet Bolt EV
- 2022 Chevrolet Bolt EV
- 2023 Chevrolet Bolt EV
- 2021 Chevrolet Camaro
- 2022 Chevrolet Camaro
- 2023 Chevrolet Camaro
- 2021 Chevrolet Equinox
- 2022 Chevrolet Equinox
- 2023 Chevrolet Equinox
- 2021 Chevrolet Malibu
- 2022 Chevrolet Malibu
- 2023 Chevrolet Malibu
- 2021 Chevrolet Silverado 1500
- 2022 Chevrolet Silverado 1500
- 2023 Chevrolet Silverado 1500
- 2021 Chevrolet Silverado 2500
- 2022 Chevrolet Silverado 2500
- 2023 Chevrolet Silverado 2500
- 2021 Chevrolet Trailblazer
- 2022 Chevrolet Trailblazer
- 2023 Chevrolet Trailblazer
- 2021 GMC Acadia
- 2022 GMC Acadia
- 2023 GMC Acadia
- 2021 GMC Sierra 1500
- 2022 GMC Sierra 1500
- 2023 GMC Sierra 1500
- 2021 GMC Sierra 2500
- 2022 GMC Sierra 2500
- 2023 GMC Sierra 2500
- 2021 GMC Terrain
- 2022 GMC Terrain
- 2023 GMC Terrain
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.