GM Service Manual Online
For 1990-2009 cars only

Playing the Radio

VOLUME: This knob turns the system on and off and controls the volume. To increase the volume and turn the radio on, turn the knob clockwise. Turn it counterclockwise to decrease the volume.

RECALL: Press the upper knob briefly to recall the station being played or to display the clock. To change what is normally shown on the display (station or time), press the knob until you see the display you want, then hold the knob until the display flashes. If you press the knob when the ignition is off, the clock will show for a few seconds.

Finding a Station

AM-FM: Press the lower knob to switch between AM, FM1 and FM2. The display shows the selection.

TUNE: Turn the lower knob to choose radio stations.

SEEK: Press the right or left arrow to go to the next higher or lower station and stay there. The sound will mute while seeking.

SCAN: Press one of the SEEK arrows for two seconds, and SCAN will appear on the display. Use SCAN to listen to stations for a few seconds. The radio will go to a station, stop for a few seconds, then go on to the next station. Press one of the SEEK arrows again to stop scanning. The sound will mute while scanning.

PUSHBUTTONS: The six numbered bushbuttons let you return to the customer's favorite stations. You can set up to 18 stations (six AM, six FM1 and six FM2). Perform the following steps:

  1. Turn the radio on.
  2. Press the AM-FM button to select the band.
  3. Tune in the desired station.
  4. Press and hold one of the six numbered buttons. The sound will mute. When it returns, release the button. Whenever you press that numbered button, the station you set will return.
  5. Repeat the steps for each pushbutton.

P SCAN: Press this button to listen to each of the preset stations for a few seconds. The radio will go to the first preset station, stop for a few seconds, then go on to the next preset station. Press P SCAN again to stop scanning. The radio will not stop at a preset station if the station is weak.

Setting the Tone

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

TREB: Press this knob lightly so it extends. Turn the knob to increase or decrease treble. If a station is weak or noisy, you may want to decrease the treble.

Push these knobs back into their stored positions when you're not using them.

Adjusting the Speakers

BAL: Turn the control behind the upper knob to move the sound to the left or right speakers. The middle position balances the sound between the speakers.

FADE: Turn the control behind the lower knob to move the sound to the front or rear speakers. The middle position balances the sound between the speakers.

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, 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 when the ignition or radio is off, first press EJECT or RECALL. Note that the cassette tape adapter kits for portable compact disc players will work in the cassette tape player.

The tape bias is set automatically.

If E and a number appear on the radio display, the tape won't play because of an error.

    • E10: 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, the tape may be damaged and should not be used in the player. Try a new tape to make sure the player is working properly.
    • E11: The tape is broken. Try a new tape.

PREV (1): Press this button to search for the previous selection on the tape. The tape must have at least three seconds of silence between each selection for PREV to work. The sound will mute while seeking.

NEXT (2): Press this button to search for the next selection on the tape. The tape must have at least three seconds of silence between each selection for the NEXT to work. The sound will mute while seeking.

The SEEK left and right arrows will also find the previous and next selections on the tape.

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

>>(4): Press this button to advance quickly to another part of the tape. Press the button again to return to playing speed. The radio will paly while the tape advances.

SIDE (5) Press this button to change the side of the tape that is playing.

DOLBY (6) Press this button to reduce the background noise. The display will show either OFF of ON for a few seconds when you press the button.

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.

EJECT: Press this button to remove the tape. The radio will play. If you leave a cassette tape in the player while listening to the radio, it may become warm.

CLN: 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. Refer to Tape Player and Cassette Care in this section. After you clean the player, press and hold EJECT for five seconds to reset the CLN indicator. The radio will display - - - to show the indicator was reset.

Playing the Radio

VOLUME: Press this knob to turn the system on and off. To increase the volume, turn the knob clockwise. Turn it counterclockwise to decrease the volume.

Press this button briefly to recall the station being played or to display the clock. 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 shows the selection.

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

SEEK: Press the up or down arrow to go to the next higher or lower station and stay there. The sound will mute while seeking.

SCAN: Press on of the SEEK arrows for two seconds and SCAN will appear on the display. Use SCAN to listen to stations for a few seconds. The radio will go to a station, stop for a few seconds, then go on to the next station. Press on of the SEEK buttons again to stop scanning. The sound will mute while scanning.

PUSHBUTTONS: The six numbered pushbuttons let you return to the customer's favorite stations. You can set up to 18 stations (six AM, six FM1 and six FM2. Just:

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

P SCAN Press this button to listen to each of the preset stations for a few seconds. The radio will go first preset station, stop for a few seconds, the go on to the next preset station. Press P SCAN again to stop scanning. If a preset station has weak reception, the radio will not stop at the preset station.

AUTO SET Press this button and the system will seek and set the 12 stronger FM or the 6 strongest AM stations on the preset buttons (depending on which band (AM or FM) you are listening to). 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 the Tone

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

TREB: Press this knob lightly so it extends. Turn the knob to increase or decrease the treble.

Push these knobs back into their stored positions when you're not using them.

TONE: This feature allows you to choose preset bass and treble, equalization settings designed for classical, pop, rock, jazz, talk and country/western stations. CLASS will appear on the display when you first press TONE. Each time you press it, another setting will appear on the display. Press it again after C & W appears and MANUAL will appear. Tone control, will return to the BASS and TREB knobs. Also, if you use the BASS and TREB knobs, control will return to them and MANUAL will appear.

Adjusting the Speakers

BALL: Press this knob lightly so it extends. Turn the knob to move the sound to the left or right speakers. The middle position balance the sound between the speakers.

FADE: Press this knob lightly so it extends. Turn the knob to move the sound to the front or rear speakers. The middle position balances the sound between the speakers.

Push these knobs back into their stored positions when you're not using them.