The problem: in affected vehicles, the infotainment system may have a condition where the display screen will appear black with no audio during cold temperature conditions. If this problem is present, the vehicle will not produce a chime when the key is detected or inserted, either.
The hazards: while this problem does not pose a safety risk, various features will be unavailable if the infotainment screen goes black and/or freezes.
The fix: dealers will be instructed to verify the radio software and update it if necessary. This should prevent the black screen condition from appearing in cold weather conditions. The software update can also be pushed to vehicles via an over-the-air update, so dealers are asked to check the status of the vehicle’s software when they arrive at the dealer to ensure the update has not already been made.
Affected components: infotainment system (RPO codes IOS, IOT and IOU).
- 2021 Buick Encore GX
- 2021 Cadillac XT4
- 2021 Cadillac XT5
- 2021 Cadillac XT6
- 2021 Chevy Blazer
- 2021 Chevy Malibu
- 2021 Chevy Silverado
- 2021 Chevy Trailblazer
- 2021 GMC Acadia
- 2021 GMC Sierra
Number of affected vehicles: GM has not yet announced how many Buick, Cadillac, Chevy and GMC vehicles are affected by this particular issue.
Owners should: this service update will be addressed for vehicles already in dealership inventory and with customer vehicles that return to the dealership for any reason going forward. Owners of affected vehicles can also reach out to Buick, Cadillac, Chevrolet or GMC directly using the contact information included below with any questions or concerns they may have.
- GM Service Update number: N212316020
- Buick Customer Service: 1-800-521-7300
- Cadillac Customer Service: 1-877-248-2080
- Chevrolet Customer Service: 1-800-222-1020
- GMC Customer Service: 1-800-462-8782