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 DTC B2462 is not set in the Telematics Communication Interface Control Module.
- If DTC B2462 is set in the Telematics Communication Interface Control Module and the vehicle is not equipped with a navigation system
  Refer to Circuit/System Testing Without Navigation System.
- If DTC B2462 is set in the Telematics Communication Interface Control Module and the vehicle is equipped with a navigation system
  Refer to Circuit/System Testing With Navigation System.
- If DTC B2462 is not set in the Telematics Communication Interface Control Module
Verify 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 system
  Refer to Circuit/System Testing Without Navigation System
- If the advisor can not locate the vehicle and the vehicle is equipped with a navigation system
  Refer to Circuit/System Testing With Navigation System.
- If the advisor can locate the vehicle
Verify DTC B2462 is not set in the radio.
- If DTC B2462 is set in the radio
  Refer to Circuit/System Testing With Navigation System - Step 9.
- If DTC B2462 is not set in the radio
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 System - Step 9.
- If the NO GPS symbol/message is not displayed
All OK.