GM Service Manual Online
For 1990-2009 cars only

Standard Radio Shown


Object Number: 809533  Size: B3

Your vehicle may be equipped with a Concert Sound III sound system, which includes eight speakers and an eight channel, 200 watt amplifier.

Playing the Radio

ON/OFF: Push this knob to turn the system on and off.

VOLUME: Turn the knob to increase or to decrease the volume.

RECALL: Press this button to switch the display between the radio station frequency and the time. To change what is normally shown on the display (station or time), press this button until you see the display you want, then hold the button until the display flashes. If you press the button when the ignition is off, the clock will show for a few seconds.

Finding a Station

AM-FM: Press this button to switch between AM, FM1 and FM2. The display will show your selection.

TUNE : Press the up or the down arrow to choose radio stations.

SEEK : Press the up or the down arrow to go to the next or to the previous station and stay there. To scan stations, press and hold one of the SEEK arrows for two seconds and SCAN will appear on the display. The radio will go to a station, play for a few seconds, then go on to the next station. Press one of the SEEK arrows again to stop scanning. The radio will seek and scan only to stations that are in the selected band and only to those with a strong signal.

P SCAN (Preset Scan): Press this button to listen to each of your preset stations for a few seconds. The radio will go to the first preset station, play for a few seconds, then go on to the next preset station. Press P SCAN again to stop scanning presets. The radio will scan only to preset stations that are in the selected band and only to those with a strong signal.

AUTO SET (Automatic Set): Press this button, after selecting AM or FM, to seek and set the 12 strongest FM or the 6 strongest AM stations on your preset pushbuttons. AUTO SET will flash while seeking and will remain on until this function is complete. To return to the stations you manually set, press AUTO SET again.

Setting Preset Stations

The six numbered pushbuttons let you return to your favorite stations. You can set up to 18 stations (six AM,  FM1 and six FM2) by performing the following steps:

  1. Turn the radio on.
  2. Press AM-FM to select AM, FM1 or FM2.
  3. Tune in the desired station.
  4. Press TONE to select the setting you prefer.
  5. Press and hold one of the six numbered pushbuttons. The sound will mute. When it returns, release the pushbutton. Whenever you press that numbered pushbutton, the station you set will return and the tone you selected will be automatically selected for that pushbutton.
  6. Repeat the steps for each pushbutton.

Setting the Tone (Bass/Treble)

BASS: Press this knob lightly so it extends. Turn the knob to increase or to decrease bass.

TREB (Treble): Press this knob lightly so it extends. Turn the knob to increase or to decrease treble. If a station is weak or noisy, you may want to decrease the treble. Return these knobs to their stored positions when you're not using them.

TONE: Press this button to choose bass and treble equalization settings designed for country/western, jazz, talk, pop and classical stations. To return the bass and treble to the manual mode, press either TONE, BASS or TREB until MANUAL appears. See "Setting Preset Stations" listed previously to program the auto tone feature.

Adjusting the Speakers (Balance/Fade)

BAL (Balance): Press this knob lightly so it extends. Turn the knob to move the sound toward the left or the right speakers.

FADE: Press this knob lightly so it extends. Turn the knob to move the sound toward the front or the rear speakers. Return these knobs to their stored positions when you're not using them.

Playing a Cassette Tape

The longer side with the tape visible should face to the right. If the ignition and the radio are on, the tape can be inserted and will begin playing. If you hear nothing or hear a garbled sound, the tape may not be in squarely. Press EJECT to remove the tape and start over.

While the tape is playing, use the VOLUME, SEEK, FADE, BAL, BASS and TREB controls just as you do for the radio. Other controls may have different functions when a tape is inserted. The display will show an arrow to show which side of the tape is playing.

If you want to insert a tape while the ignition or radio is off, first press EJECT or RECALL. Cassette tape adapter kits for portable compact disc players will work in your cassette tape player.

Your tape bias is set automatically.

If an error appears on the display, see "Cassette Tape Messages" later in this section.

1 PREV (Previous): Your tape must have at least three seconds of silence between each selection for previous to work. Press this pushbutton to search for the previous selection on the tape.

2 NEXT: Your tape must have at least three seconds of silence between each selection for next to work. Press this pushbutton to search for the next selection on the tape.

3 (Reverse): Press this pushbutton to reverse the tape rapidly. Press it again to return to playing speed. The radio will play while the tape reverses.

4 (Forward): Press this pushbutton to advance quickly to another part of the tape. Press it again to return to playing speed. The radio will play while the tape advances.

5 SIDE: Press this pushbutton to play the other side of the tape.

6 (Dolby): Press this pushbutton to reduce background noise. The double-D symbol will appear on the display. Dolby Noise Reduction is manufactured under a license from Dolby Laboratories Licensing Corporation. Dolby and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.

AM-FM: Press this button to listen to the radio when a cassette tape is playing.

SOURCE: Press this button to play a tape when listening to the radio. TAPE PLAY with an arrow will appear on the display while the tape is active.

SEEK : Your tape must have at least three seconds of silence between each selection for seek to work. Press the up or the down arrow to go to the next or to the previous selection on the tape.

EJECT: Press this button to stop a tape when it is playing and to remove a tape when it is not playing. Eject may be activated with the radio off.

Cassette Tape Messages

TIGHT TAPE:  The tape is tight and the player can't turn the tape hubs. Remove the tape. Hold the tape with the open end down and try to turn the right hub counterclockwise with a pencil. Turn the tape over and repeat. If the hubs do not turn easily, your tape may be damaged and should not be used in the player. Try a new tape to make sure your player is working properly.

BROKEN TAPE: The tape is broken. Try a new tape.

WRAPPED:  The tape is wrapped. Try a new tape.

CLEAN PLAYR (Clean Player):  If this message appears on the display, the cassette tape player needs to be cleaned. It will still play tapes, but you should clean it as soon as possible to prevent damage to the tapes and player. See Care of the Cassette Tape Player . If any error occurs repeatedly or if an error can't be corrected, contact your dealer. If your radio displays an error number, write it down and provide it to your dealer when reporting the problem.