Circuit/System Verification

NOTE:

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

Ignition ON.
Verify that DTC B2470 is not set.
- If DTC B2470 is set
  Refer to Circuit/System Testing
- If DTC B2470 is not set
Verify that a call can be successfully placed to the OnStar Call Center by pressing the blue OnStar button.
- If unable to connect with the OnStar Call Center.
  Refer to Unable to Contact OnStar Call Center
- If able to connect with the OnStar Call Center
All OK.