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 setup will configure the following systems:

   • LEARN VIN
   • Diagnostic Trouble Codes
   • Class 2 Radio Messages
   • Country Code
   • Chime Volume
   • Chime Level
   • 12/24 Hour Clock
Without learning the VIN, the radio will display a locked message (LOC).

The radio setup procedure will also clear the following messages:

   • CAL
   • CAL ERR
   • CALIBRATE