GM Service Manual Online
For 1990-2009 cars only

Base Radio Shown, Bose® Similar


Object Number: 1430659  Size: B3

Base MP3 Radio shown, Bose® similar


Object Number: 1966901  Size: B3

Base Six-Disc CD Radio shown, Bose® similar


Object Number: 1411837  Size: B3

The vehicle has one of these radios as its audio system.

If the vehicle has the Bose® audio system, it has six Bose® amplified speakers.

Radio Data System (RDS)

The audio system has a Radio Data System (RDS). RDS features are available for use only on FM stations that broadcast RDS information.

With RDS, the radio can do the following:

    • Seek to stations broadcasting the selected type of programming.
    • Receive announcements concerning local and national emergencies.
    • Display messages from radio stations.

This system relies upon receiving specific information from these stations and only works when the information is available. In rare cases, a radio station can broadcast incorrect information that causes the radio features to work improperly. If this happens, contact the radio station.

While the radio is tuned to an RDS station, the station name or call letters display instead of the frequency. RDS stations can also provide the time of day, a program type (PTY) for current programming, and the name of the program being broadcast.

Playing the Radio

PWR (Power): Push to turn the system on and off.

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

DISPL (Display) or INFO (Information): Press to display the time while the ignition is off. For RDS, press to change the information while using RDS. The display options are station name, RDS station frequency, PTY (program type), and the name of the program (if available). For XM, press to retrieve four different categories of information related to the current song or channel: Artist, Song Title, Category or PTY, Channel Number/Channel Name. To change the default on the display, press the DISPL or INFO knob until the desired display is shown, then briefly press and hold the knob until a beep is heard. The selected display becomes the default.

AUTO VOL (Automatic Volume): With automatic volume, the audio system adjusts automatically to make up for road and wind noise while driving by increasing the volume as vehicle speed increases. Set the volume at the desired level. Press this button to select LOW, MEDIUM, or HIGH. AVOL, or depending on the radio, MIN, MED, or MAX. AUTO VOL. Each higher setting provides more volume compensation at faster vehicle speeds. On some radios, NONE may display if the radio cannot determine the vehicle speed. To turn automatic volume off, press this button until OFF, AVOL OFF, or AUTO VOL OFF displays.

Finding a Station

BAND: Press to choose between FM1, FM2, AM, or XM1 or XM2.

TUNE : Turn to select radio stations.

/ SEEK: Press either SEEK arrow, or depending on the radio, SEEK or TYPE arrow to go to the previous or to the next station and stay there. The radio only seeks stations with a strong signal that are in the selected band.

SCAN : Press and hold either SCAN arrow, or depending on the radio, SCAN or TYPE arrow briefly until SCAN or SCN displays and a beep is heard. The radio goes to a station, plays for a few seconds, then goes to the next station. Press either arrow again to stop scanning. To scan preset stations, press and hold either SCAN arrow, or depending on the radio, SCAN or TYPE arrow for more than four seconds. PSCN or PSC displays and a double beep is heard. The radio goes to a preset station, plays for a few seconds, then goes to the next preset station. Press either arrow again to stop scanning presets. The radio only scans stations with a strong signal that are in the selected band.

Setting Preset Stations

Up to 30 stations (six FM1, six FM2, and six AM, six XM1 and six XM2, can be programed on the six numbered pushbuttons, by performing the following steps:

  1. Turn the radio on.
  2. Press BAND to select FM1, FM2, AM, or XM1 or XM2.
  3. Tune in the desired station.
  4. Press and hold one of the six numbered pushbuttons until a beep sounds. When that numbered pushbutton is pressed, the station that was set, returns.
  5. Repeat Steps 2 through 4 for each pushbutton.

To store an equalization setting to a preset station perform the following:

  1. Tune to the preset station.
  2. Press and release the AUTO EQ button to select the equalization setting.
  3. Once the equalization no longer displays, the equalization is set for that preset station.

Setting the Tone (Bass/Midrange/Treble)

AUDIO: Press and turn to adjust the Tone.

  1. Push and release until BASS, MID (midrange) (without Bose®), or TREB (treble) displays.
  2. Turn to increase or to decrease the tone.

The display shows the bass, midrange (without Bose®), or treble level. If a station is weak or has static, decrease the treble.

To adjust the bass, midrange (without Bose®), or treble to the middle position while it is displayed, push and hold AUDIO. The radio produces one beep and adjusts the display level to the middle position.

To adjust all tone and speaker controls to the middle position, push and hold AUDIO when no tone or speaker controls displays. ALL CENTERED displays and a beep is heard.

AUTO EQ (Automatic Equalization): Press to select customized equalization settings designed for country/western, jazz, talk, pop, rock, and classical. To return the bass and treble to the manual mode, push and release this button until CUSTOM displays. The radio saves separate AUTO EQ settings for each preset and source. If the radio has the Bose® audio system, the equalization settings are either CUSTOM or TALK.

Adjusting the Speakers (Balance/Fade)

AUDIO: Press and turn to adjust the speakers.

To adjust the balance between the right and the left speakers:

  1. Push and release until BAL (balance) displays.
  2. Turn to move the sound toward the right or the left speakers.

To adjust the fade between the front and rear speakers:

  1. Push and release this knob until FADE or FAD displays.
  2. Turn to move the sound toward the front or the rear speakers.

To adjust the balance or the fade to the middle position while it is displayed, push and hold the AUDIO knob. On some radios, push the AUDIO knob, then push it again and hold it until one beep is heard.

To adjust all tone and speaker controls to the middle position, push and hold the AUDIO knob when no tone or speaker controls display. ALL CENTERED displays and a beep is heard.

Finding a Program Type (PTY) Station (RDS and XM)

To select and find a desired PTY

  1. Press the TYPE button to activate program type select mode. TYPE or P-TYPE and the last selected PTY displays.
  2. Turn the TYPE knob or press and release the TYPE button to select a PTY.
  3. Press either SEEK or TYPE arrow to select and to go to the PTY's first station.
  4. To go to another station within that PTY, press the TYPE button, then press either SEEK or TYPE arrow once.
  5. Press either SEEK or TYPE arrow twice to exit the program type select mode.

If the radio cannot find the desired program type, NONE displays and the radio returns to the last station that was playing.

SCAN: To scan the stations within a PTY for all Radios except the MP3 Radio:

  1. Press the TYPE button to activate program type select mode. TYPE or P-TYPE and the last selected PTY displays.
  2. Turn the TYPE knob or press and release the TYPE button to select a PTY.
  3. Once the desired PTY displays, press and hold either SCAN or TYPE arrow for two seconds, and the radio begins scanning the stations in the PTY.
  4. Press either SCAN or TYPE arrow to stop scanning.

To select and find a desired PTY for the MP3 Radio:

  1. Turn the P-TYPE knob to select a PTY.
  2. Press the SEEK TYPE button to select and go to the PTY's first station.
  3. Press the SEEK TYPE button twice to display the PTY and then go to another station.
  4. Press the P-TYPE knob to exit program type select mode.
  5. IF PTY times out and no longer displays, go back to Step 1.

If both PTY and TRAF are on, the radio searches for stations with the selected PTY and traffic announcements.

If the radio cannot find the desired program type, NONE displays and the radio returns to the last station.

BAND (Alternate Frequency): Alternate frequency lets the radio switch to a stronger station with the same program type. To turn alternate frequency on, press and hold BAND for two seconds. AF ON displays. The radio can switch to stations with a stronger frequency. To turn alternate frequency off, press and hold BAND again for two seconds. AF OFF displays. The radio does not switch to other stations. This function does not apply for XM™ Satellite Radio Service.

Setting Preset PTYs (RDS Only)

For the Base Radio, pushbuttons have factory PTY presets. Up to 12 PTYs (six FM1 and six FM2), can be programmed on the six numbered pushbuttons, by performing the following steps:

  1. Press BAND to select FM1 or FM2.
  2. Press the TYPE button to activate program type select mode. P-TYPE and the last selected PTY displays.
  3. Turn the TYPE knob or press and release the TYPE button to select a PTY.
  4. Press and hold one of the six numbered pushbuttons until a beep sounds. When that numbered pushbutton is pressed (while in PTY mode), the PTY that was set, returns.
  5. Repeat the steps for each pushbutton.

RDS Messages

ALERT! (MP3 Radio): Alert warns of local or national emergencies. When an alert announcement comes on the current radio station, ALERT! displays. The announcement is heard, even if the volume is low or a CD is playing. If a CD is playing, play stops during the announcement. Alert announcements cannot be turned off. ALERT! is not affected by tests of the emergency broadcast system. This feature is not supported by all RDS stations.

TRAF (Traffic) (MP3 Radio): If TRAF displays, the tuned station broadcasts traffic announcements and the traffic announcement is played when the tuned radio station broadcasts one. If the station does not broadcast traffic announcements, press the TRAF button and the radio seeks to a station that does. When a station that broadcasts traffic announcements is found, the radio stops seeking and TRAF displays. If no station is found that broadcasts traffic announcements, No Traf displays. If TRAF displays, press the TRAF button to turn off the traffic announcements. The radio plays the traffic announcement if the volume is low. The radio interrupts the play of a CD if the last tuned station broadcasts traffic announcements. This function does not apply to XM Satellite Radio Service.

INFO (Information): If the current station has a message, the information symbol or INFO displays. Press this button to see the message. The message can display the artist, song title, call in phone numbers, etc. If the entire message is not displayed, parts of the message appears every three seconds. To scroll through the message, press and release the INFO button. A new group of words displays after every press of this button. Once the complete message has displayed, the information symbol or INFO disappears from the display until another new message is received. The last message is displayed by pressing the INFO button. View the last message until a new message is received or a different station is tuned to.

Radio Messages

CAL ERR (Calibration Error): Displays if the radio is no longer calibrated properly for the vehicle. The vehicle must be returned to your dealer/retailer for service.

LOCKED: Displays when the THEFTLOCK® system has activated. Take the vehicle to your dealer/retailer for service.

If any error occurs repeatedly, or if an error cannot be corrected, contact your dealer/retailer.

XM™ Satellite Radio Service

XM is a satellite radio service that is based in the 48 contiguous United States and 10 Canadian provinces. XM Satellite Radio has a wide variety of programming and commercial-free music, coast-to-coast, and in digital-quality sound. During your trial or when you subscribe, you will get unlimited access to XM Radio Online for when you are not in the vehicle. A service fee is required to receive the XM service. For more information, contact XM at xmradio.com or call 1-800-929-2100 in the U.S. and xmradio.ca or call 1-877-438-9677 in Canada.

Radio Messages for XM Only

See XM Radio Messages later in this section for further detail.

Playing a CD

Insert a CD partway into the slot, label side up. The player pulls it in and the CD should begin playing.

For the Base Radio, first press the eject button or the INFO knob to insert a CD with the ignition off.

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

When a CD is inserted, the CD symbol displays. As each new track starts to play, the track number displays.

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.

Care of CDs

Sound quality can 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. Handle them carefully. Store CD-R(s) in their original cases or other protective cases and away from direct sunlight and dust. The CD player scans the bottom surface of the disc. If the surface of a CD is damaged, such as cracked, broken, or scratched, the CD does not play properly or not at all. Do not touch the bottom side of a CD while handling it; this could damage the surface. Pick up CDs by grasping the outer edges or the edge of the hole and the outer edge.

If the surface of a CD is soiled, take a soft, lint free cloth or dampen a clean, soft cloth in a mild, neutral detergent solution mixed with water, and clean it. Make sure the wiping process starts from the center to the edge.

Care of the CD and DVD Player

Do not add a 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.

The use of CD lens cleaners for CDs is not advised, due to the risk of contaminating the lens of the CD optics with lubricants internal to the CD and DVD player mechanism.

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 displays, see "CD Messages" later in this section.

For vehicles that have a radio with a Six-Disc CD player, see the following:

LOAD: Press to load CDs into the CD player. This CD player holds up to six CDs.

To insert one CD:

  1. Turn the ignition on.
  2. Press and release the LOAD button.
  3. Wait for the indicator light, located to the right of the slot, to turn green.
  4. Load a CD. Insert the CD part way into the slot, label side up. The player pulls the CD in.

To insert multiple CDs:

  1. Turn the ignition on.
  2. Press and hold the LOAD button for two seconds.
  3. A beep sounds and the indicator light, located to the right of the slot, begins to flash and MULTI LOAD # displays.

  4. Once the light stops flashing and turns green, INSERT CD # displays, load a CD. Insert the CD part way into the slot, label side up. The player pulls the CD in.
  5. Once the CD is loaded, the indicator light begins flashing again. Once the light stops flashing and turns green, 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 LOAD button to cancel the loading function. The radio begins to play the last CD loaded.

If more than one CD has been loaded, a number for each CD displays.

Playing a Specific Loaded CD

For every CD loaded, a number displays. To play a specific CD, first press the CD AUX button (if not already in CD mode), then press the numbered pushbutton that corresponds to the CD. A small bar displays under the CD number that is playing and the track number displays.

(Eject) (Base or MP3 Radio): Press to eject a CD. Eject can be activated with either the ignition or radio off. CDs can be loaded with the radio and ignition off if this button is pressed first.

CD (Eject): Press to eject CD(s).

To eject the CD that is currently playing, press and release this button.

To eject multiple CDs:

  1. Press and hold the button for two seconds.
  2. A beep is heard and the indicator light, located to the right of the slot, begins to flash and EJECT ALL displays.

  3. Once the light stops flashing, REMOVE CD # displays. The CD ejects and can be removed.
  4. Once the CD is removed, the indicator light begins flashing again and another CD ejects.

    To stop ejecting the CDs, press the button.

If the CD is not removed, after 25 seconds, the CD automatically pulls back into the player. If CD is pushed back into the player, before the 25-second time period is complete, the player senses an error and tries to eject the CD several times before stopping.

Do not repeatedly press the button to eject a CD after pushing it in manually. The player's 25-second eject timer resets at each press of eject, causing the player to not eject the CD until the 25-second time period has elapsed.

1 FLD (Previous) (MP3 Radio): This pushbutton does not work while using a non-MP3 CD.

2 FLD (Next) (MP3 Radio): This pushbutton does not work while using a non-MP3 CD.

1 PREV (Previous) (Base Radio): Press to go to the beginning of the current track (if more than eight seconds have played), or to the beginning of the previous track (if less than eight seconds have played). TRACK and the track number displays. If this pushbutton is held or pressed more than once, the player continues moving backward through the CD.

2 NEXT (Base Radio): Press to go to the next track. TRACK and the track number displays. If this pushbutton is held or pressed more than once, the player continues moving forward through the CD.

REV or 3 REV (Reverse): Press and hold to reverse quickly within a track. For the Base Radio, press and hold for less than two seconds to reverse at six times the normal playing speed. Press and hold it for more than two seconds to reverse at 17 times the normal playing speed. Sound is heard at a reduced volume. Release this button to play the passage. ET and/or the elapsed time of the track displays.

FWD or 4 FWD (Forward): Press and hold to advance quickly within a track. For the Base Radio, press and hold for less than two seconds to advance at six times the normal playing speed. Press and hold it for more than two seconds to advance at 17 times the normal playing speed. Sound is heard at a reduced volume. Release this button to play the passage. ET and/or the elapsed time of the track displays.

5 (CD): Press to play a CD while listening to the radio. The CD symbol displays when a CD is loaded.

RPT (Repeat): With the repeat setting, one track or an entire CD can be repeated. To use repeat, do the following:

    • To repeat a track, press and release the RPT button. RPT displays. Press again to turn off repeat play.
    • To repeat the CD, press and hold the RPT button for two seconds. RPT displays. Press again to turn off repeat play.
6 RDM (Random) (Base Radio or MP3 Radio): Press to hear the tracks in random, rather than sequential, order. RDM ON displays. RDM T or RDM and the track number displays when each track starts to play. Press again to turn off random play. RDM OFF displays.

RDM (Random): With the random setting, tracks can be listened to in random, rather than sequential, order, on one CD or on all of the CDs. To use random, do one of the following:

    • To play the tracks on the CD in random order, press and release the RDM button. RANDOM ONE displays. Press again to turn off random play.
    • To play the tracks on all of the CDs that are loaded in random order, press and hold RDM for more than two seconds. A beep sounds and RANDOM ALL displays. Press again to turn off random play.
AUTO EQ (Automatic Equalization): Press to select the equalization setting while playing a CD. The equalization is stored when a CD is played. For more information on AUTO EQ, see "AUTO EQ" listed previously in this section.

/ SEEK: Press the left arrow to go to the start of the current or to the previous track. On some radios, pressing the left arrow, if more than 10 seconds have played, goes to the start of the current track. Press the right arrow to go to the start of the next track. If either arrow is pressed more than once, the player continues moving backward or forward through the CD. On some radios, pressing either arrow for more than two seconds scans the previous or next tracks at five to eight seconds per track. SCAN and the track number displays.

SCAN : To scan one CD, press and hold either SCAN, or depending on the radio, the TYPE arrow for more than two seconds until SCAN or TRACK SCAN displays and a beep is heard. The radio goes to the next track, plays for 10 seconds, then goes to the next track. Press either SCAN or depending on the radio, TYPE arrow again, to stop scanning. To scan all loaded CDs, press and hold either SCAN arrow for more than four seconds until ALL CD SCAN displays and a beep sounds. Use this feature to listen to 10 seconds of the first track of each loaded CD. Press either SCAN arrow again, to stop scanning.

TUNE (MP3 Radio) : Turning this knob fast tracks reverse or advances through tracks. The track number displays for each track.

DISPL (Display) or INFO (Information): Press to see how long the current track has been playing. ET and/or the elapsed time displays. To change the default on the display, track, or elapsed time, press until the desired display appears, then press and hold briefly until a beep sounds. The selected display becomes the default.

BAND: Press to listen to the radio when a CD is playing. The inactive CD(s) remains inside the radio for future listening.

CD AUX (Auxiliary): Press to play a CD while listening to the radio, or to listen to an auxiliary source (such as rear seat entertainment, if equipped).

Using Song List Mode

The six-disc CD changer has a feature called song list. This feature is capable of saving 20 track selections.

To save tracks into the song list feature:

  1. Turn the CD player on and load it with at least one CD. See "LOAD CD" listed previously in this section for more information.
  2. Check to see that the CD changer is not in song list mode. S-LIST should not appear on the display. If S-LIST displays, press the SONG LIST button to turn it off.
  3. Select the desired CD by pressing the numbered pushbutton and then use the right SEEK or TYPE arrow to locate the track to be saved. The track begins to play.
  4. Press and hold the SONG LIST button to save the track into memory. When SONG LIST is pressed, one beep sounds. After two seconds of continuously pressing the SONG LIST button, two beeps sound to confirm the track has been saved.
  5. Repeat Steps 3 and 4 for saving other selections.

S-LIST FULL displays if more than 20 selections are saved.

To play the song list, press the SONG LIST button. One beep sounds and S-LIST displays. The recorded tracks begin to play in the order they were saved.

Seek through the song list by using either SEEK or TYPE arrow. Seeking past the last saved track returns to the first saved track.

To delete tracks from the song list:

  1. Turn the CD player on.
  2. Press the SONG LIST button to turn song list on. S-LIST displays.
  3. Press either SEEK or TYPE arrow to select the desired track to be deleted.
  4. Press and hold the SONG LIST button for two seconds. When SONG LIST is pressed, one beep sounds. After two seconds of continuously pressing the SONG LIST button, two beeps sound to confirm that the track has been deleted.

After a track has been deleted, the remaining tracks are moved up the list. When another track is added to the song list, the track is added to the end of the list.

To delete the entire song list:

  1. Turn the CD player on.
  2. Press the SONG LIST button to turn song list on. S-LIST displays.
  3. Press and hold the SONG LIST button for more than four seconds. One beep sounds, followed by two beeps after two seconds, and a final beep sounds after four seconds. S-LIST EMPTY displays indicating the song list has been deleted.

If a CD is ejected, and the song list contains saved tracks from that CD, those tracks are automatically deleted from the song list. Any tracks saved to the song list again are added to the bottom of the list.

To end song list mode, press the SONG LIST button. One beep sounds and S-LIST is removed from the display.

Playing an MP3/WMA CD-R Disc

The vehicle's radio system may have the MP3/WMA feature. If it has this feature, it is capable of playing an MP3/WMA CD-R disc. For more information on how to play an MP3/WMA CD-R disc, see Using an MP3 later in this section.

CD Messages

CHECK CD: If this message displays and/or the CD ejects, it could be for one of the following reasons:

    • It is very hot. When the temperature returns to normal, the CD should play.
    • The road is very rough. When the road becomes smoother, the CD should play.
    • The CD is dirty, scratched, wet, or upside down.
    • The air is very humid. If so, wait about an hour and try again.
    • There could have been a problem while burning the CD.
    • The label could 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/retailer. If the radio displays an error message, write it down and provide it to your dealer/retailer when reporting the problem.

Listening to a DVD

If the vehicle has the Rear Seat Entertainment (RSE) system and a DVD is playing, the DVD symbol displays indicating that the DVD is available and can be listened to through the vehicle's speakers.

To listen to the DVD, press the CD AUX button until RSE displays. The current radio source stops and the DVD sound comes through the speakers.

To stop listening to the DVD, press the CD AUX button, if a CD is loaded, or press the BAND button to select a different source.

When the RSE system is turned off, the DVD symbol goes off of the radio display and RSE OFF displays. The radio returns to the last radio source that was playing. See Rear Seat Entertainment (RSE) Systemfor more information.