GM Service Manual Online
For 1990-2009 cars only

The following service procedure requires programming procedures to be performed on the radio.

Radio Setup

Note: The radio setup files will configure the radio amplifier (if equipped), internal equalization settings, and program the vehicle identification number (VIN). Without the following setup procedure, the sound quality and volume of the radio may be degraded.

Setup is completed using the Service Programming System (SPS). Refer to Service Programming System (SPS).