GM Service Manual Online
For 1990-2009 cars only

Complete the following procedure, using a scan tool, in order to properly set up communication:

  1. At the Main Menu screen, select: Diagnostics.
  2. At the Vehicle Identification screen, select the following options:
  3. • Model Year
    • Passenger Car
  4. At the System Selection Menu screen, select: Body.
  5. At the Vehicle Identification screen, select the appropriate model.
  6. At the Body screen, select: Radio.
  7. At the Radio screen, select: Special Functions.
  8. At the Special Functions screen, select: Radio Setup.
  9. At the Radio Setup screen, press ENTER (The following test will set up a new or existing radio).
  10. Verify that the scan tool displays "Test in Progress."
  11. Verify that the scan tool displays "Test Completed Successfully."
  12. Press EXIT on the scan tool and cycle the ignition.

Important: The radio set up will configure the following systems:

   • Steering Wheel Controls
   • LEARN VIN
   • Diagnostic Trouble Codes
   • Class 2 Radio Messages
Without learning the VIN, the radio will display a locked message (LOC).

Radio Theft Procedure

Complete the following procedure, using a scan tool, in order to properly set up communication:

  1. At the Main Menu screen, select: Diagnostics.
  2. At the Vehicle Identification screen, select the following options:
  3. • Model Year
    • Passenger Car
  4. At the System Selection Menu screen, select: Body
  5. At the Vehicle Identification screen, select the appropriate model.
  6. At the Body Screen, select: Radio.
  7. At the Radio screen, select: Special Functions.
  8. At the Special Functions screen, select: VIN Relearn.
  9. At the VIN Relearn screen, the scan tool will display "Do you want to clear radio theft information?"
  10. To begin clearing, press the soft touch key on the top right of the scan tool. The scan tool will display "Clearing Radio Theft in Progress."
  11. Press EXIT on the scan tool and cycle the ignition.

Important: The radio theft will learn the VIN. Without learning the VIN, the radio will display a locked message (LOC or LOCKED).