Cadillac CT4 2019–2022 — technical service bulletin
Bulletin 22-NA-094 · NHTSA communication 11015573 · issued Mar 5, 2025
Technical service bulletin
communication type
Electrical System
component
2019–2022
model years
22
vehicle entries
Official summary
This service bulletin provides repair information to correct a customer concern of a loss of cabin heat.
Vehicles covered
- 2020 Cadillac CT4
- 2021 Cadillac CT4
- 2022 Cadillac CT4
- 2020 Cadillac CT5
- 2021 Cadillac CT5
- 2022 Cadillac CT5
- 2019 Cadillac XT4
- 2020 Cadillac XT4
- 2021 Cadillac XT4
- 2022 Cadillac XT4
- 2020 Cadillac XT5
- 2021 Cadillac XT5
- 2022 Cadillac XT5
- 2020 Cadillac XT6
- 2021 Cadillac XT6
- 2022 Cadillac XT6
- 2020 Chevrolet Blazer
- 2021 Chevrolet Blazer
- 2022 Chevrolet Blazer
- 2020 GMC Acadia
- 2021 GMC Acadia
- 2022 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.