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.

NOTE:

Verify the antenna is installed correctly and not damaged.

Ignition ON.
Verify DTC B1444, B1446, or B1451 is not set.
- If any of the DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If none of the DTCs are set
Refer to Circuit/System Testing.