GM Service Manual Online
For 1990-2009 cars only

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:
  3. • Model Year
    • Passenger Car
  4. At the Vehicle Identification screen, select the appropriate model.
  5. At the System Selection Menu screen, select Body.
  6. At the Body Screen, select Radio:
  7. At the Radio screen, select Module Setup.
  8. At the Module Setup screen, select Unlock Radio.
  9. Follow the on-screen instructions.
  10. Press EXIT on the scan tool and cycle the ignition.