Circuit/System Verification

WARNING: This page is about a different car, the 2012 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

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

Vehicle in Service Mode.
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 and the vehicle is not equipped with a navigation radio
  Refer to Circuit System Testing Without Navigation Radio.
- If the advisor can not locate the vehicle and the vehicle is equipped with a navigation radio
  Refer to Circuit System Testing With Navigation Radio.
- If the advisor can locate the vehicle
Verify that the NO GPS symbol/message is not displayed on the radio.
- If the NO GPS symbol/message is displayed
  Refer to Circuit System Testing With Navigation Radio.
- If the NO GPS symbol/message is not displayed
All OK.