GM Service Manual Online
For 1990-2009 cars only

To setup a new radio for the vehicle, complete the setup procedure under the Special Functions menu of the scan tool.

If the new radio is not properly setup, the radio will display a locked message (LOC) or Calibrate.

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).