GM Service Manual Online
For 1990-2009 cars only

Object Number: 986827  Size: B3

Playing the Radio

ON OFF: Press this button to turn the system on and off.

AUDIO (Volume): Turn this knob to increase or to decrease the volume. The radio has a feature that limits the amount of amplifier distortion that you can hear, see "Dynamic Distortion Limiting (DDL)" later in this section for more information.

Finding a Station

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

TUNE DISC : Press the right or the left arrow to select radio stations.

SEEK TRACK : Press the right or the left arrow to go to the next or to the previous station and stay there. The radio will only seek stations with a strong signal that are in the selected band.

LOC (Local): Press this button to switch the radio to local mode. LOCAL will appear on the display and you will only be able to listen and search for local stations. This feature is useful when using seek for searching for strong signals with good reception and clear sound quality.

Setting Preset Stations

Up to 18 stations, six FM1, six FM2, and six AM, can be programmed on the six numbered pushbuttons, by performing the following steps:

  1. Turn the radio on.
  2. Press FM AM to select FM1, FM2, or AM.
  3. Tune in the desired station.
  4. Press EQ to select the equalization.
  5. Press and hold one of the six numbered pushbuttons until you hear a beep. Whenever that numbered pushbutton is pressed, the station that was set will return and the equalization that was selected will be stored for that pushbutton.
  6. Repeat the steps for each pushbutton.
ASM (Automatic Station Memory): The radio will automatically store the six strongest AM and FM radio stations for the current area, without deleting the preset stations that are stored.

To activate ASM do the following:

  1. Turn the radio on.
  2. Press FM AM to select FM1, FM2, or AM.
  3. Press the ASM button for more than two seconds. The sound will briefly mute and SEARCH will appear on the display, while the radio is in the process of finding and storing radio stations.
  4. When storing is complete, ASM will appear on the display. The radio station now stored on pushbutton 1 will begin to play.

  5. Press any of the pushbuttons to listen to the station stored on that pushbutton.
  6. To stop listening to the stations stored by ASM, press the ASM button and ASM will go off the display.
  7. Repeat the above steps if you have driven out of the stored stations' range to select new stations.

Setting the Tone (Bass/Treble)

AUDIO: The audio system must be out of EQ mode to adjust the bass and treble. To turn equalization off, press this button until EQ OFF appears on the display. Push and release the AUDIO knob until BASS or TREBLE appears on the display. Turn the knob to increase or to decrease. If a station is weak or noisy, decrease the treble. To adjust bass or treble to the middle position, select BASS or TREB and push and hold the AUDIO knob. The radio will produce one beep and adjust the display level to the middle position. To adjust all tone and speaker controls to the middle position, push and hold the AUDIO knob when no tone or speaker control is displayed. STD will appear on the display and you will hear a beep.

EQ (Equalization): Press this button to select customized equalization settings designed for rock, pop, jazz, classical, and vocal. To turn equalization off, press this button until EQ OFF appears on the display. To give an equalization setting a boost, push the AUDIO knob once while in any equalization setting. BOOST will appear on the display. Turn the AUDIO knob to select one of the available boost levels. Different levels of boost can be set for each of the equalization settings.

Adjusting the Speakers (Balance/Fade)

AUDIO: To adjust the balance between the right and the left speakers, push and release the AUDIO knob until BALANCE appears on the display. Turn the knob to move the sound toward the right or the left speakers. To adjust the fade between the front and the rear speakers, push and release the AUDIO knob until FADER appears on the display. Turn the knob to move the sound toward the front or the rear speakers.

Playing a CD

If the ignition or radio is turned off, with a CD in the player, it will stay in the player. When the ignition or radio is turned on, the CD will start playing where it stopped, if it was the last selected audio source.

When a CD is inserted, the CD number will appear in the CD symbol on the display. As each new track starts to play, the track number will appear on the display.

The CD player can play the smaller 3 inch (8 cm) single CDs with an adapter ring. Full-size CDs and the smaller CDs are loaded in the same manner.

If playing a CD-R, the sound quality may be reduced due to CD-R quality, the method of recording, the quality of the music that has been recorded, and the way the CD-R has been handled. There may be an increase in skipping, difficulty in finding tracks, and/or difficulty in loading and ejecting. If these problems occur, check the bottom surface of the CD. If the surface of the CD is damaged, such as cracked, broken, or scratched, the CD will not play properly. If the surface of the CD is soiled, see Care of Your CDs for more information.

If there is no apparent damage, try a known good CD.

Do not add any label to a CD, it could get caught in the CD player. If a CD is recorded on a personal computer and a description label is needed, try labeling the top of the recorded CD with a marking pen instead.

Notice: If a label is added to a CD, or more than one CD is inserted into the slot at a time, or an attempt is made to play scratched or damaged CDs, the CD player could be damaged. While using the CD player, use only CDs in good condition without any label, load one CD at a time, and keep the CD player and the loading slot free of foreign materials, liquids, and debris.

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

LOAD: Press the LOAD button to load CDs into the CD player. This CD player will hold up to six CDs.

To insert one CD, do the following:

  1. Turn the ignition on.
  2. Press and release the LOAD button.
  3. Wait for INSERT CD to appear on the display, the indicator light, located to the left of the slot, to flash, and for the radio to produce a beep, if beeps are turned on. See "Confirmation Beeps" later in this section for information about turning beeps on and off.
  4. Load a CD. Insert the CD partway into the slot, label side up. The player will pull the CD in.

To insert multiple CDs, do the following:

  1. Turn the ignition on.
  2. Press and hold the LOAD button for two seconds.
  3. Wait for LOAD ALL to appear on the display, the indicator light, located to the left of the slot, to flash, and for the radio to produce a beep, if beeps are turned on. See "Confirmation Beeps" later in this section for information about turning beeps on and off.
  4. Once the light stops flashing and turns green, load a CD. Insert the CD partway into the slot, label side up. The player will pull the CD in.
  5. Once the CD is loaded, the light will begin flashing again. Once the light stops flashing and turns green, you can load another CD. The CD player takes up to six CDs. Do not try to load more than six.

To load more than one CD but less than six, complete Steps 1 through 3. When finished loading CDs, press the EJECT button to cancel the loading function. The radio will begin to play the last CD loaded.

For every CD loaded, a number will appear on the display. To play a specific CD, press the numbered pushbutton that corresponds to the CD you want to play. The CD number that is playing will flash, and the track number will appear.

TRACK SCAN: Press this button to listen to the first 10 seconds of each track on the CD that is playing. Press this button again to stop scanning.

TRACK REPEAT: Press this button to repeat the track that is playing. Press this button again to turn off repeat play.

TRACK RANDOM: Press this button to listen to the tracks, on the CD that is playing, in random, rather than sequential order. Press this button again to turn off random play.

DISC SCAN: If more than one CD is loaded, press this button to listen to the first 10 seconds of the first track on each loaded CD. Press this button again to stop scanning.

DISC REPEAT: Press this button to repeat the CD that is currently playing. Press this button again to turn off repeat play.

DISC RANDOM: If more than one CD is loaded, press this button to play all of the CDs in random, rather than sequential order. Press this button again to turn off random play.

II (Pause): Press this button to pause a CD. CD PAUSE will appear on the display. Press this button again to play the CD.

FM AM: Press this button to listen to the radio when a CD is playing. The inactive CD(s) will remain safely inside the radio for future listening.

EQ (Equalization): Press EQ to select the desired equalization setting while playing a CD. The equalization will be stored whenever a CD is played. For more information on EQ, see "EQ" listed previously in this section.

SEEK TRACK : Press the left arrow to go to the start of the current track, if more than 10 seconds have played. Press the right arrow to go to the next track. If either arrow is held or pressed more than once, the player will continue moving backward or forward through the CD. If the audio system is in random mode, pressing the left arrow will only go to the start of the current track.

TUNE DISC : When more than one CD is loaded, press the left or right arrow to go to the previous or next CD loaded. If the audio system is in random mode, pressing the left arrow will only go to the start of the current track.

FR FF (Fast Reverse/ Fast Forward): Press and hold FR to reverse quickly within a track. Press and hold FF to advance quickly within a track. You will hear sound at a reduced volume. Release this button to play the passage. The elapsed time of the track will appear on the display.

EJECT: Press this button to eject a single CD or multiple CDs. To eject the CD that is currently playing, press and release this button. EJECTING CD # will appear on the display, the indicator light, located to the left of the slot, will flash, and the radio will produce a beep, if beeps are turned on. See "Confirmation Beeps" later in this section for information about turning beeps on and off. You can now remove the CD. Press the LOAD button to cancel the eject function. To eject multiple CDs, press and hold this button for two seconds. EJECTING ALL will appear on the display, the indicator light, located to the left of the slot, will flash, and the radio will produce a beep, if beeps are turned on. See "Confirmation Beeps" later in this section for information about turning beeps on and off. You can now remove the CD. Press the LOAD button to cancel the eject function. If the CD is not removed, after 25 seconds, the CD will be automatically pulled back into the player. If you try to push the CD back into the player before the 25 second time period is complete, the player will sense an error and will try to eject the CD several times before stopping. Do not repeatedly press the EJECT button to eject a CD after you have tried to push it in manually. The player's 25-second eject timer will reset at each press of eject, which will cause the player to not eject the CD until the 25-second time period has elapsed. Once the player stops and the CD is ejected, remove the CD. After removing the CD, press the ON OFF button, off and then on again. This will clear the CD-sensing feature and enable CDs to be loaded into the player again.

CD Messages

CD ERROR PLAY: The CD cannot be read. The CD is dirty, scratched, wet, or upside down.

CD ERROR MECH (Mechanism):  If this message appears on the display, it could be for one of the following reasons:

    • The CD is stuck in the player and cannot be played, loaded, or ejected.
    • It is very hot. When the temperature returns to normal, the CD should play.
    • You are driving on a very rough road. When the road becomes smoother, the CD should play.
    • The air is very humid. If so, wait about an hour and try again.
    • There may have been a problem while burning the CD.
    • The label may be caught in the CD player.

If the CD is not playing correctly, for any other reason, try a known good CD.

If any error occurs repeatedly or if an error cannot be corrected, contact your dealer. If the radio displays an error message, write it down and provide it to your dealer when reporting the problem.

Options Menu

The following features can be adjusted through the vehicle's options menu located in the instrument panel cluster in the trip computer display window.

Confirmation Beeps

Beeps are used to confirm various actions of the radio such as storing a preset. The beeps can be turned on or off using the options menu. See "Options Menu Adjustment" later in this section to adjust the confirmation beeps.

BEEPS ON: The radio will make a beep sound when storing radio stations, when it is time to insert or remove a CD from the CD changer, or to confirm that the LOAD ALL or EJECT ALL functions have started.

BEEP ONLY: The radio will make a beep sound when it is time to insert or remove a CD from the CD changer or to confirm that the LOAD ALL or EJECT ALL functions have started.

BEEPS OFF: The radio will not produce any beeps.

Speed-Dependent Volume (SDV)

With SDV, the audio system adjusts automatically to make up for road or wind noise as you drive.

This feature will never completely compensate for driving noise. There are other factors such as road surface, wind noise, windows open, and engine speed that may alter the interior noise for any given road speed.

You can select compensation rates between 0 (off) and 5 (maximum compensation) in the options menu. See "Options Menu Adjustment" later in this section to adjust SDV.

Dynamic Distortion Limiting (DDL)

The radio has a feature that limits the amount of amplifier distortion that you can hear. When this feature is turned on, it continuously monitors the quality of the signal to the speakers. When the signal distortion exceeds the preset limits the radio will automatically limit or reduce the volume until the distortion is minimized. Under some circumstances, distortion may be heard for a very short period of time until the system has taken the necessary steps to limit it.

The speakers may go off when the volume level is set at a high or full volume for a long period of time in order to protect the amplifier from overheating. When the amplifier cools down, the radio will reset and you will again hear sound through the speakers.

The main source of distortion in music is the low frequency bass caused by drums or large instruments. Music that features very strong bass may trigger the distortion limiting system and the system will then reduce the volume to minimize the distortion. Increasing the bass control or the EQ boost may also result in a reduced volume level due to the emphasized bass. See "Setting the Tone (Bass/Treble)" previously in this section. The DDL can be turned off so that the radio will deliver a higher volume level, but distortion will also be increased.

See "Options Menu Adjustment" later in this section to adjust DDL.

Options Menu Adjustment

Confirmation beeps, SDV, and DDL can all be adjusted by doing the following:

  1. Turn off the radio by pressing the OFF button.
  2. Press and hold pushbutton 1, then press the ON button until OPTION MENU appears on the display.
  3. Push the AUDIO knob until the correct option appears on the display.
  4. Turn the AUDIO knob to adjust the setting of the option being displayed.
  5. Push the AUDIO knob to select another option or press the OFF button to exit the options menu. The selection will be saved.
  6. If no buttons are pressed or turned for eight seconds, the radio will automatically exit the menu and the radio will turn on.

Master Reset

The radio has a reset feature that allows you to return certain settings back to the factory default settings. Use this feature when adjustments have been made that affect the sound quality or operation of the radio and you are unsure of how to return to the original settings.

This master reset feature will reset the following:

    • Bass, Treble, Fade, and Balance
    • Confirmation beeps to on
    • SDV to setting 2
    • DDL to on
    • EQ to off.

To perform the master reset, do the following:

  1. Turn off the radio by pressing the OFF button.
  2. Press the ON button and pushbutton 4 at the same time for about two seconds.
  3. After the radio has finished resetting, the radio will turn on with the original settings and no message will appear on the display.