Cadillac CT6 2019–2020 — technical service bulletin
Bulletin 20NA171 · NHTSA communication 10205543 · issued Nov 23, 2021
Technical service bulletin
communication type
Equipment
component
2019–2020
model years
18
vehicle entries
Official summary
This service bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808.
Vehicles covered
- 2019 Cadillac CT6
- 2020 Cadillac CT6
- 2019 Cadillac XT4
- 2019 Chevrolet Blazer
- 2019 Chevrolet Camaro
- 2019 Chevrolet Colorado
- 2020 Chevrolet Colorado
- 2019 Chevrolet Equinox
- 2020 Chevrolet Equinox
- 2019 Chevrolet Malibu
- 2020 Chevrolet Malibu
- 2019 Chevrolet Silverado 1500
- 2019 Chevrolet Volt
- 2019 GMC Canyon
- 2020 GMC Canyon
- 2019 GMC Sierra 1500
- 2019 GMC Terrain
- 2020 GMC Terrain
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.