Circuit/System Verification

WARNING: This page is about a different car, the 2023 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON/Vehicle In Service Mode.
Verify that DTC U0028 or U0029 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
Verify DTC B101D or B101E is not set.
- If DTC B101D or B101E is not set
  All OK
- Go to next step: If DTC B101D or B101E is set
If equipped, remove SD card from X20 Memory Card Receptacle.
Verify DTC B101D or B101E is not set.
- If DTC B101D or B101E is not set
  Refer to Memory Card Receptacle Malfunction (Surround Vision Camera System with XVR) .
- Go to next step: If DTC B101D or B101E is set
Program the device that sets the DTC.
Verify DTC B101D or B101E is not set.
- If DTC B101D or B101E is set
  Replace the device that sets the DTC.
- Go to next step: If DTC B101D or B101E is not set
All OK