Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON.
Verify the DTC B101D is not set.
- If the DTC is set
1. Replace the B218L Side Object Sensor Module - Left.
2. Verify no new DTCs set and the side blind zone alert operates properly.
  - If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle , or if the system does not operate properly, refer to Symptoms - Object Detection .
  - If there are no new DTCs and the side object system operates properly
3. All OK.
- If the DTC is not set
All OK