Circuit/System Verification

WARNING: This page is about a different car, the 2022 Buick Envision. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON.
Verify there are no DTCs set, except for DTC B1A05.
- If any other DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If no other DTCs are set
Verify DTC B1A05 is not set
- If DTC B1A05 is set
  Replace the K124 Image Processing Module.
- Go to next step: If DTC B1A05 is not set
All OK.