Buick Encore GX 2018–2023 — technical service bulletin
Bulletin 21-NA-181 · NHTSA communication 10219391 · issued Aug 29, 2022
Technical service bulletin
communication type
Power Train
component
2018–2023
model years
33
vehicle entries
Official summary
This service bulletin provides 9th gear operation information to respond to customers that may comment on transmission shift operation.
Vehicles covered
- 2020 Buick Encore GX
- 2021 Buick Encore GX
- 2022 Buick Encore GX
- 2021 Buick Envision
- 2022 Buick Envision
- 2019 Cadillac XT4
- 2020 Cadillac XT4
- 2021 Cadillac XT4
- 2022 Cadillac XT4
- 2020 Cadillac XT5
- 2021 Cadillac XT5
- 2022 Cadillac XT5
- 2023 Cadillac XT5
- 2020 Cadillac XT6
- 2021 Cadillac XT6
- 2022 Cadillac XT6
- 2023 Cadillac XT6
- 2020 Chevrolet Blazer
- 2021 Chevrolet Blazer
- 2022 Chevrolet Blazer
- 2023 Chevrolet Blazer
- 2021 Chevrolet Trailblazer
- 2022 Chevrolet Trailblazer
- 2020 GMC Acadia
- 2021 GMC Acadia
- 2022 GMC Acadia
- 2023 GMC Acadia
- 2018 GMC Terrain
- 2019 GMC Terrain
- 2020 GMC Terrain
- 2021 GMC Terrain
- 2022 GMC Terrain
- 2022 GMC Terrain NA
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.