Circuit/System Verification

WARNING: This page is about a different car, the 2020 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON/Vehicle In Service Mode.
Verify that DTC U0184, DTC U1008 or DTC U3000 is not set.
- If any of the DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If none of the DTCs are set but B1B2F is set
  Attempt to reprogram the A11 Radio.
1. Verify that DTC B1B2F is not set.
  - If DTC B1B2F is set.
    Replace the A11 Radio.
2. Verify that DTC B1B2F is not set.
  - If DTC B1B2F is set.
    Replace the K73 Telematic Control Module.
- Go to next step: If no DTCs are set
A fault is currently not present and may be an intermittent condition.