Circuit/System Verification

NOTE: The following verification requires the vehicle to be outside with an unobstructed view of the southern sky. Allow 5 minutes after turning the ignition ON for the vehicle to acquire the GPS satellites signal.

Ignition ON.
Verify that no DTCs are set.
- If any DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If no DTCs are set
Verify that an OnStar® advisor can locate the vehicle after performing a blue button press.
- If the advisor can not locate the vehicle
  Refer to Circuit/System Testing .
- If the advisor can locate the vehicle
All OK.