Circuit/System Verification
WARNING: This page is about a different car, the 2013 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON.
- Verify DTC B1020 is not set.
- If DTC B1020 is set
Replace the A22 Radio Controls.
- If DTC B1020 is not set
- If DTC B1020 is set
- All OK.