This service bulletin provides 9th gear operation information to respond to customers that may comment on...
Chevrolet technical service bulletin 21-NA-181 for 2020-2025 Chevrolet Blazer, 2021-2025 Chevrolet Trailblazer and 2020-2023 GMC Acadia and others.
- Bulletin number
- 21-NA-181
- Component
- Power train
- Summary
- This service bulletin provides 9th gear operation information to respond to customers that may comment on transmission shift operation.
Owners of these vehicles have filed 585 complaints in the transmission category.
Vehicles covered
- Chevrolet Blazer 2020-2025 202020212022202320242025
- Chevrolet Trailblazer 2021-2025 20212022202320242025
- GMC Acadia 2020-2023 2020202120222023
- GMC Terrain 2018-2024 2018201920202021202220232024
- Cadillac XT5 2020-2025 202020212022202320242025
- Buick Envision 2021-2025 20212022202320242025
- Buick Encore GX 2020-2025 202020212022202320242025
- Cadillac XT6 2020-2025 202020212022202320242025
- Cadillac XT4 2019-2025 2019202020212022202320242025
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