GM Service Manual Online
For 1990-2009 cars only

PWR-VOL Control

The system will turn ON with a momentary delay with the ignition in the RUN or in the ACCESSORY position and rotating the upper knob clockwise. The station frequency is displayed and then the time of day is displayed. Rotate the knob clockwise to increase the volume. Rotate the knob counterclockwise to decrease the volume.

RECALL (Radio) Control

When the system is ON pressing RECALL will display (or recall) the station being played. When the ignition is OFF pressing RECALL will display the time of day.

BASS Control

Push the BASS Control knob to release it. Rotate the knob to the right to increase bass. Rotate the knob to the left to decrease bass. Push the knob back in to store it when not adjusting.

TREB Control

Push the TREB knob to release it. Rotate the knob to the right to increase treble. Rotate the knob to the left to decrease treble. Push the knob back in to store it when not adjusting.

BAL Control

Push the BAL Control knob to release it. Rotate the knob to move sound between the right and left speakers. Push the knob back in to store it when not adjusting.

FADE Control

Push the FADE Control knob to release it. Rotate the knob to move sound between the front and the rear speakers. Push the knob back in to store it when not adjusting.

TUNE Control

Push the TUNE Control knob to release it. Rotate the knob to choose desired radio stations. Push the knob back in to store it when not adjusting.

SEEK (Radio) Control

Press SEEK > or < SEEK and the radio will tune to the next higher or the next lower station and stay there.

AM/FM (Radio) Control

Press AM/FM to receive AM, FM1, or FM2 band. The selection will appear on the VF display.

P SCAN Control

Press P SCAN to hear each of the present stations for a few seconds. Press P SCAN again to stop at a chosen station.

AUTO TONE Control

Press AUTO TONE to choose preset treble and bass equalization settings designed for one of the following:

    • ROCK
    • NEWS
    • POP
    • CLASSICAL
    • JAZZ

Each time AUTO TONE is pressed, another setting will appear on the display. When MAN (manual) appears the control of the tone will be back to the treble and bass knobs.

ST (Stereo) Indicator

ST will appear on the VF display whenever a FM stereo broadcast is selected.

Push Buttons (Numbered)

A total of 18 stations can be preset. Six AM stations can be preset. Six FM1 stations can be preset. Six FM2 stations can be preset. The following is the preset stations procedure:

  1. Tune in the desired station (in the desired band; AM, FM1, or FM2).
  2. Press and hold one of the six push buttons for 5 seconds. The station will fade out and then return when set. The present station will return whenever that button is pressed.

Repeat these steps for each push button.

Clock

The time will appear on the VF display. To set the time perform the following procedure:

  1. Press and hold HR (hour) until the correct hour appears.
  2. Press and hold MIN (minute) until the correct minute appears.

There will be a 2-second delay before the clock goes into the time set mode.

Press RECALL to display the time when the ignition is OFF.