Buick Enclave 2017–2021 — technical service bulletin
Bulletin 20NA071 · NHTSA communication 10184483 · issued Nov 6, 2020
Technical service bulletin
communication type
Engine
component
2017–2021
model years
23
vehicle entries
Official summary
This technical bulletin provides repair information to correct a customer concern of the Service Engine Soon Lamp illuminated and/or Service Power Brake Assist message displayed, with DTCs P0557 or P0558 Stored.
Vehicles covered
- 2018 Buick Enclave
- 2019 Buick Enclave
- 2020 Buick Enclave
- 2021 Buick Enclave
- 2017 Cadillac XT5
- 2018 Cadillac XT5
- 2019 Cadillac XT5
- 2020 Cadillac XT5
- 2021 Cadillac XT5
- 2020 Cadillac XT6
- 2021 Cadillac XT6
- 2019 Chevrolet Blazer
- 2020 Chevrolet Blazer
- 2021 Chevrolet Blazer
- 2018 Chevrolet Traverse
- 2019 Chevrolet Traverse
- 2020 Chevrolet Traverse
- 2021 Chevrolet Traverse
- 2017 GMC Acadia
- 2018 GMC Acadia
- 2019 GMC Acadia
- 2020 GMC Acadia
- 2021 GMC Acadia
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.