Buick Envision 2021–2023 — technical service bulletin
Bulletin N252516900 · NHTSA communication 11026626 · issued Dec 17, 2025
Technical service bulletin
communication type
Fuel/propulsion System
component
2021–2023
model years
23
vehicle entries
Official summary
Emission Recall. Additional VINs moved to Open status.
Vehicles covered
- 2021 Buick Envision
- 2022 Buick Envision
- 2021 Cadillac Escalade
- 2021 Cadillac Escalade Esv
- 2021 Cadillac XT4
- 2022 Cadillac XT4
- 2023 Cadillac XT4
- 2021 Cadillac XT5
- 2022 Cadillac XT5
- 2021 Cadillac XT6
- 2022 Cadillac XT6
- 2021 Chevrolet Blazer
- 2021 Chevrolet Camaro
- 2021 Chevrolet Equinox
- 2021 Chevrolet Malibu
- 2021 Chevrolet Suburban
- 2021 Chevrolet Tahoe
- 2021 GMC Acadia
- 2022 GMC Acadia
- 2021 GMC Savana
- 2021 GMC Terrain
- 2021 GMC Yukon
- 2021 GMC Yukon XL
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.