GM Service Manual Online
For 1990-2009 cars only

Object Number: 861308  Size: B2

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
    • Seek to stations with traffic announcements.

This system relies upon receiving specific information from these stations and will only work when the information is available. In rare cases, a radio station may broadcast incorrect information that will cause 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 will appear on the display instead of the frequency. RDS stations may also provide the time of day, a program type (PTY) for current programming, and the name of the program being broadcast.

XM™ Satellite Radio Service

XM™ is a satellite radio service that is based in the 48 contiguous Untied States and in Canada (if available). XM™ offers over 100 coast to coast channels including music, news, sports, talk, and children's programming. XM™ provides digital quality audio and text information that includes song title and artist name. A service fee is required in order to receive the XM™ service. For more information, contact XM™ at www.xmradio.com or call 1-800-852-XMXM (9696).

Playing the Radio

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

VOL (Volume): Turn this knob to increase or to decrease the volume.

DISP (Display): Press this button to switch the display between the radio station frequency and the time. Press this button to display the time when the ignition is turned off. For RDS, press the DISP button to change what appears on the display while using RDS. The display options are station, RDS station frequency, PTY, and the name of the program (if available). For XM™ (if equipped), press the DISP button while in XM™ mode 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 DISP button until you see the display you want, then hold the button until the display flashes. The selected display will now be the default.

SCV (Speed-Compensated Volume): With SCV, your audio system adjusts automatically to make up for road and wind noise as you drive. To get to SCV, push the TUNE/AUDIO knob repeatedly until SPEED VOL appears on the display. Turn the TUNE/AUDIO knob to select MIN, MED, or MAX. Each higher setting allows for more volume compensation at faster vehicle speeds. Then, as you drive, SCV automatically increases the volume, as necessary, to overcome noise at any speed. The volume level should always sound the same to you as you drive. To turn SCV off, press SCV until OFF appears on the display.

Finding a Station

BAND: Press this button to switch between FM1, FM2, AM, or XM1 or XM2 (if equipped). The display will show the selection.

TUNE: Turn this knob to select radio stations.

SEEK : Press the right or the left arrow to go to the next or to the previous station and stay there. To scan stations, press and hold either SEEK arrow for two seconds until SCAN appears on the display. The radio will go to a station, play for a few seconds, then go on to the next station. Press either SEEK arrow again to stop scanning. To scan preset stations, press and hold either SEEK arrow for more than four seconds until SCAN and the preset number appear on the display and you hear a double beep. The radio will go to the first preset station, play for a few seconds, then go on to the next preset station. Press either SEEK arrow again to stop scanning presets. The radio will only seek and scan 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 (if equipped), can be programmed 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 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.

Setting the Tone (Bass/Treble)

AUDIO: Push and release AUDIO until BASS, MID, or TREBLE appears on the display. Then turn the AUDIO knob to increase or to decrease. If a station is weak or noisy, decrease the treble. To adjust bass, midrange, or treble to the middle position, select BASS, MID, or TREBLE. Then push and hold AUDIO for more than two seconds until you hear a beep. BASS and a zero, MID and a zero, or TREBLE and a zero will appear on the display. To adjust both tone controls and both speaker controls to the middle position, end out of audio mode by waiting five seconds without making any changes. Then push and hold AUDIO for more than two seconds until you hear a beep. ALL CENTERED will appear on the display.

EQ (Equalizer): Press this button to select customized equalization settings designed for country/western, jazz, talk, pop, rock, and classical.

Adjusting the Speakers (Balance/Fade)

AUDIO: To adjust the balance between the right and the left speakers, push and release AUDIO until BAL appears on the display. Then turn the AUDIO knob to move the sound toward the right or the left speakers. A bar graph with indicators will appear on the display. To adjust the fade between the front and the rear speakers, push and release AUDIO until FADE appears on the display. Then turn the AUDIO knob to move the sound toward the front or the rear speakers. A bar graph with indicators will appear on the display. To adjust balance or fade to the middle position, select BAL or FADE. Then push and hold AUDIO for more than two seconds until you hear a beep. The indicator will be centered on the display. To adjust both tone controls and both speaker controls to the middle position, end out of audio mode by waiting five seconds without making any changes. Then push and hold AUDIO for more than two seconds until you hear a beep. ALL CENTERED will appear on the display.

Finding a Program Type (PTY) Station

To select and find a desired PTY perform the following:

  1. Press P-TYP to activate program type select mode. P-TYPE will appear on the display.
  2. Turn the AUDIO knob to select a PTY.
  3. Once the desired PTY is displayed, press either SEEK arrow to select the PTY and to take you to the PTY's first station.
  4. To go to another station within that PTY and the PTY is displayed, press either SEEK arrow once. If the PTY is not displayed, press either SEEK arrow twice to display the PTY and then to go to another station.
  5. Press P-TYP to exit program type select mode.
  6. If PTY times out and is no longer on the display, go back to Step 1.

If both PTY and TRAF are on, the radio will search for the selected PTY and traffic announcements.

SCAN: Scan the stations within a PTY by performing the following:

  1. Press P-TYP to activate program type select mode. P-TYPE will appear on the display.
  2. Turn the AUDIO knob to select a PTY.
  3. Once the desired PTY is displayed, press and hold either SEEK arrow, and the radio will begin scanning the stations in the PTY.
  4. Press and hold either SEEK arrow to stop at a station.

If both PTY and TRAF are on, the radio will scan for the selected PTY and traffic announcements.

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

RDS Messages

ALERT!: Alert warns of local or national emergencies. When an alert announcement comes on the current radio station, ALERT! will appear on the display. You will hear the announcement, even if the volume is low or a cassette tape or CD is playing. If a cassette tape or CD is playing, play will stop during the announcement. Alert announcements cannot be turned off. ALERT! will not be affected by tests of the emergency broadcast system. This feature is not supported by all RDS stations.

INFO (Information): If the current station has a message, INFO will appear on the display. Press this button to see the message. The message may display the artist, song title, call in phone numbers, etc. If the entire message is not displayed, parts of the message will appear every three seconds. To scroll through the message, press the INFO button. A new group of words will appear on the display after every press of this button. Once the complete message has been displayed, INFO will disappear from the display until another new message is received. The last message can be displayed by pressing the INFO button. You can view the last message until a new message is received or a different station is tuned to.

TRAF (Traffic): If TRAF appears on the display, the tuned station broadcasts traffic announcements. To receive the traffic announcement from the tuned station, press this button. Brackets will be displayed around TRAF and when a traffic announcement comes on the tuned radio station you will hear it. If the station does not broadcast traffic announcements, press this button and the radio will seek to a station that does. When a station that broadcasts traffic announcements is found, the radio will stop seeking and brackets will be displayed around TRAF. If no station is found that broadcasts traffic announcements, NO TRAFFIC will appear on the display. If the brackets are on the display and TRAF is not, press the TRAF button to remove the brackets or use the TUNE knob or the SEEK arrows to go to a station that supports traffic announcements. If no station is found, NO TRAFFIC will appear on the display. The radio will play the traffic announcements even if the volume is low. The radio will interrupt the play of a cassette tape or CD if the last tuned station broadcasts traffic announcements. This function does not apply to XM™ Satellite Radio Service.

Radio Messages

CAL (Calibrate): The audio system has been calibrated for your vehicle from the factory. If CAL appears on the display, it means that the radio has not been configured properly for the vehicle and must be returned to your GM dealer for service.

LOCKED: This message is displayed when the THEFTLOCK® system has locked up. Return your vehicle to your GM dealer for service. If any error occurs repeatedly or if an error cannot be corrected, contact your GM dealer.

XM™ Radio Messages

Radio Display Message

Condition

Action Required

XL (Explicit Language Channels)

XL on the radio display, after the channel name, indicates content with explicit language.

These channels, or any others, can be blocked at a customer's request, by calling 1-800-852-XMXM (9696).

Updating

Updating encryption code

The encryption code in the receiver is being updated, and no action is required. This process should take no longer than 30 seconds.

No Signal

Loss of signal

The system is functioning correctly, but the vehicle is in a location that is blocking the XM signal. When you move into an open area, the signal should return.

Loading XM

Acquiring channel audio (after 4 second delay)

The audio system is acquiring and processing audio and text data. No action is needed. This message should disappear shortly.

CH Off Air

Channel not in service

This channel is not currently in service. Tune to another channel.

CH Unavail

Channel no longer available

This previously assigned channel is no longer assigned. Tune to another station. If this station was one of the presets, choose another station for that preset button.

No Info

Artist Name/Feature not available

No artist information is available at this time on this channel. The system is working properly.

No Info

Song/Program Title not available

No song title information is available at this time on this channel. The system is working properly.

No Info

Category Name not available

No category information is available at this time on this channel. The system is working properly.

No Info

No Text/Informational message available

No text or informational messages are available at this time on this channel. The system is working properly.

Not Found

No channel available for the chosen category

There are no channels available for the selected category. The system is working properly.

XM Locked

Theft lock active

The XM receiver in the vehicle may have previously been in another vehicle. For security purposes, XM receivers cannot be swapped between vehicles. If this message is received after having your vehicle serviced, check with your GM dealer.

Radio ID

Radio ID label (channel 0)

If tuned to channel 0, this message will alternate with the XM Radio 8 digit radio ID label. This label is needed to activate the service.

Unknown

Radio ID not known (should only be if hardware failure)

If this message is received when tuned to channel 0, there may be a receiver fault. Consult with your GM dealer.

Chk XMRcvr

Hardware failure

If this message does not clear within a short period of time, the receiver may have a fault. Consult with your GM dealer.

Playing a Cassette Tape

The tape player is built to work best with tapes that are up to 30 to 45 minutes long on each side. Tapes longer than that are so thin they may not work well in this player. The longer side with the tape visible should face to the right. If you hear nothing or hear a garbled sound, the tape may not be in squarely. Press the eject button to remove the tape and start over.

If the ignition and radio are off, press the eject or the DISP button to insert and to begin play of a tape. If the ignition is on and the radio is off, the tape can be inserted and will begin playing.

While the tape is playing, use the VOLUME and AUDIO controls just as you do for the radio. The display will show an arrow to show which side of the tape is playing.

Cassette tape adapter kits for portable CD players will work in the cassette tape player. See "CD Adapter Kits" later for more information.

The tape bias is set automatically when a metal or chrome tape is inserted.

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

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

2 (Forward): Press this pushbutton to quickly advance the tape. The radio will play while the tape advances. Press this pushbutton again to return to playing speed.

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

SEEK : The tape must have at least three seconds of silence between each selection for seek to work. Press the left or the right arrow to go to the previous or to the next selection on the tape. SEEK and a negative or positive number will appear on the display. Pressing the left or right arrow multiple times will increase the number of selections to be searched up to -5 or +5. If -5 or +5 is shown on the display, the cassette tape player will fast forward or rewind through the four selections and stop at the fifth selection. To scan cassette tape selections, press and hold either SEEK arrow for two seconds until SCN appears on the display and you hear a beep. The tape will go to the next selection, play for a few seconds, then go on to the next selection. The cassette tape will only scan forward. Press either SEEK arrow again to stop scanning.

BAND: Press this button to listen to the radio when a cassette tape or CD is playing. The inactive tape or CD will remain safely inside the radio for future listening.

CD TAPE: Press this button to play a cassette tape or a CD when listening to the radio. The inactive tape or CD will remain safely inside the radio for future listening.

(Eject): Press this button, located next to the cassette tape slot, to eject a tape. Eject may be activated with either the ignition or radio off. Cassette tapes may be loaded with the ignition and radio off if this button is pressed first.

Cassette Tape Messages

If an error message appears on the display, it could be for one of the following reasons:

TIGHT TAPE: This message is displayed when the tape is tight and the player cannot 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.

BROKEN TAPE: This message is displayed when the tape is broken. Try a new tape.

CLEAN PLAYER: If this message appears on the display, the cassette tape player needs to be cleaned. It will still play tapes, but it should be cleaned as soon as possible to prevent damage to the tapes and player. See Care of the Cassette Tape Player . If the cassette tape is not playing correctly, for any other reason, try a known good cassette. If any error occurs repeatedly or if an error cannot be corrected, contact your GM dealer. If the radio displays an error message, write it down and provide it to your GM dealer when reporting the problem.

CD Adapter Kits

It is possible to use a portable CD player with the cassette tape player after activating the bypass feature on the tape player.

To activate the bypass feature, use the following steps:

  1. Turn the ignition on.
  2. Turn the radio off.
  3. Insert the adapter into the cassette slot.
  4. Press and hold the CD TAPE button until READY appears on the display.

The override feature will remain active until the eject button is pressed.

Playing a CD

Insert a CD partway into the slot, label side up. The player will pull it in and the CD should begin playing. If you want to insert a CD when the ignition or the radio is off, first press the eject or the DISP button.

If the ignition or radio is turned off with the 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 symbol will appear 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 and DVDs 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.

1(Reverse): Press and hold this pushbutton to reverse quickly within a track. You will hear sound at a reduced volume. Release this pushbutton to play the passage. The elapsed time of the track will appear on the display.

2 (Forward): Press and hold this pushbutton to advance quickly within a track. You will hear sound at a reduced volume. Release this pushbutton to play the passage. The elapsed time of the track will appear on the display.

4 RDM (Random): Press this pushbutton to hear the tracks in random, rather than sequential, order. Press RDM again to turn off random play.

DISP (Display): Press this button to see which track is playing. Press it again within five seconds to see how long it has been playing. To change the default on the display, track or elapsed time, press this button until you see the display you want, then hold the button until the display flashes. The selected display will now be the default.

EQ (Equalizer): Press EQ to select an equalization setting while playing a CD. The equalization will be set whenever a CD is played. See "EQ" listed previously for more information.

SEEK : Press the left arrow to go to the start of the current track if more than eight 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. 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 forward through the CD. To scan tracks, press and hold either SEEK arrow for two seconds until SCAN appears on the display and you will hear a beep. The CD will go to the next track, play for a few seconds, then go on to the next track. The sound will mute and SCAN and the track number will appear on the display while scanning. The CD will only scan forward. Press either SEEK arrow again to stop scanning.

BAND: Press this button to listen to the radio when a cassette tape or CD is playing. The inactive tape or CD will remain safely inside the radio for future listening.

CD TAPE: Press this button to play a cassette tape or CD when listening to the radio. The inactive tape or CD will remain safely inside the radio for future listening.

(Eject): Press this button to eject the CD. The CD can be remove. If the CD is not removed, after 25 seconds, the CD will be automatically pulled back into the player. If the CD is pushed 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. Eject may be activated with either the ignition or radio off. CDs may be loaded with the ignition or radio off, if this button is pressed first.

CD Messages

CHECK CD: If this message appears on the radio display and/or the CD comes out, it could be for one of the following reasons:

    • You are driving on a very rough road. When the road becomes smoother, the CD should play.
    • The CD is dirty, scratched, wet, or upside down.
    • It is very hot. When the temperature returns to normal 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 GM dealer. If the radio displays an error message, write it down and provide it to your GM dealer when reporting the problem.

Listening to a DVD

Your vehicle may have a Rear Seat Entertainment System, see Rear Seat Entertainment (RSE) System for more information. If your vehicle has this system and a DVD is playing, the DVD symbol will appear on the radio display indicating that the DVD is available and can be listened to through your vehicles speakers.

To listen to the DVD, press the CD TAPE button until RSE appears on the radio display. The current source will stop playing and the DVD sound will come through the speakers.

To stop listening to the DVD, press the CD TAPE button to listen to a CD or a tape, or press the BAND button to listen to the radio.

When the RSE system is turned off, the radio will display RSE OFF and the radio will return to the last radio source that you were listening to.