GM Service Manual Online
For 1990-2009 cars only

United States shown, Canada similar


Object Number: 1218642  Size: B3

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 United States. XM™ offers 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

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

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

DISP (Display): Press this knob to switch the display between time and temperature or radio station frequency and temperature. When the ignition is off, press this knob to display the time. For RDS, press the DISP knob to change what appears on the display while using RDS. The display options are station name, RDS station frequency, PTY, and the name of the program (if available). For XM™ (if equipped), press the DISP knob 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 knob until you see the display you want, then hold the knob for two seconds. You will hear a beep and the selected display will now be the default.

AUTO (Automatic Volume): With automatic volume, the audio system adjusts automatically to make up for road and wind noise as you drive. Set the volume at the desired level. Press this button to select LOW, MEDIUM, or HIGH. AUTO VOL LOW, AUTO VOL MEDIUM, or AUTO VOL HIGH will appear on the display. Each higher setting will allow for more volume compensation at faster vehicle speeds. Then as you drive, automatic volume increases the volume, as necessary, to overcome noise at any speed. The volume level should always sound the same to you as you drive. AUTO VOL NONE will appear on the display if the radio cannot determine the vehicle speed or if the engine is not running. To turn automatic volume off, press this button until AUTO VOL 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.

ADJ (Adjust): Turn this knob to select radio stations.

SEEK : Press the down or up arrow to go to the next or to the previous station and stay there. To scan stations, press and hold either arrow for two seconds until you hear a beep. The radio will go to a station, play for a few seconds, then go on to the next station. Press either arrow again to stop scanning. To scan preset stations, press and hold either arrow for more than four seconds until you hear two beeps. The radio will go to the first preset station stored on the pushbuttons, play for a few seconds, then go on to the next preset station. Press either 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 AUTO TONE or AUTO 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/Midrange/Treble)

TONE // (Bass/Treble): Press and release this button until BASS, MID, or TREB appears on the display. Turn the ADJ knob to increase or to decrease. The display will show the bass, mid, or treble level. If a station is weak or noisy, decrease the treble. To adjust bass, midrange, or treble to the middle position, select BASS, MID, or TREB. Then press and hold the tone button for more than two seconds. The display level will be adjusted to the middle position and you will hear a beep. To adjust all tone controls to the middle position, press and hold the tone button when no tone control is displayed. ALL CENTERED will appear on the display and you will hear a beep.

AUTO TONE/AUTO EQ (Automatic Equalization): Press this button to select customized equalization settings designed for country, jazz, talk, pop, rock, and classical. The equalization setting last chosen will appear on the display when you first press this button. Each time you press this button, another equalization setting will appear on the display and automatic tone or automatic equalization will switch to that preset equalization settings. To return to the manual mode, press the AUTO TONE or AUTO EQ button until CUSTOM appears on the display. Then manually adjust the bass, midrange, and treble using the tone button.

Adjusting the Speakers (Balance/Fade)

BAL/FADE / (Balance/Fade): To adjust the balance between the right and the left speakers, push and release the balance and fade button until BAL appears on the display. Turn the ADJ knob to move the sound toward the right or the left speakers. To adjust the fade between the front and rear speakers, push and release the balance and fade button until FADE appears on the display. Turn the ADJ knob to move the sound toward the front or the rear speakers. To adjust balance or fade to the middle position, select BAL or FADE. Then press and hold the balance and fade button for more than two seconds. The display level will be adjusted to the middle position and you will hear a beep. To adjust both speaker controls to the middle position, press and hold the tone button when no speaker control is displayed. ALL CENTERED will appear on the display and you will hear a beep.

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

To select and find a desired PTY perform the following:

  1. Press the P-TYPE button to activate program type select mode. PTY for FM or PTYPE for XM and a program type will appear on the display.
  2. Turn the ADJ knob to select a PTY.
  3. Once the desired PTY is displayed, press the SEEK up arrow to select and to take you to the PTY's first station.
  4. To go to another station within that PTY press the SEEK up arrow again. If the radio cannot find the desired PTY, NONE FOUND will appear on the display and the radio will return to the last station you were listening to.
  5. Press P-TYPE 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 P-TYPE and TRAF are on, the radio will search for stations with 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. FM ALT FREQ ON and AF 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. FM ALT FREQ OFF will appear on the display and AF will disappear from the display. The radio will not switch to other stations. This function does not apply for 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 CD is playing. If a 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.

MSG (Message): If the current station has a message, MSG 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 and release the MSG button. A new group of words will appear on the display after every press of this button. Once the complete message has been displayed, MSG will disappear from the display until another new message is received. The last message can be displayed by pressing the MSG button. You can view the last message until a new message is received or a different station is tuned to. When a message is not available from a station, NO MESSAGE will appear on the display.

MSG (Traffic): If TRAFFIC appears on the display, the tuned station broadcasts traffic announcements and when a traffic announcement comes on the tuned radio station you will hear it. If the current tuned station does not broadcast traffic announcements, press and hold this button for two seconds 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 TRAF and brackets will appear on the display. When a traffic announcement comes on the tuned radio station you will hear it. If no station is found that broadcasts traffic announcements, NO TRAFFIC INFO will appear on the display. If TRAF is on the display, press and hold the MSG button for two seconds to turn off the traffic announcements. The radio will play the traffic announcement even if the volume is low. The radio will interrupt the play of a CD if the last tuned station broadcasts traffic announcements. This function does not apply to XM™ Satellite Radio Service.

Radio Messages

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

LOCKED: This message is displayed when the THEFTLOCK® system has locked up. Take 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 the vehicle is moved 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.

Off Air

Channel not in service

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

CH Unavl

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 Lock

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 eight 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.

Check DAB

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 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 symbol will appear on the CD. 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 try a known good CD.

Do not add paper labels to CDs, they could get caught in the CD player.

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 flash on the display.
  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. You will hear a beep and MULTI LOAD CD, then INSERT CD and the number will appear on the display.

  4. Once INSERT CD and the number appears on the display, 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, INSERT CD and the number will appear on the display again. Once INSERT CD and the number appear on the display again, 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, the radio will begin to play the last CD loaded.

If more than one CD has been loaded, a number for each CD will be displayed and the currently selected slot number will be underlined.

EJECT/: To eject a single CD press this button. The radio will display EJECTING CD # and the single CD symbol will flash until the CD is ready to be removed. When the CD is ready to be removed it will eject part way from the radio and the display will change to a flashing REMOVE CD # with the single CD symbol flashing until the CD is removed. If the CD is not removed within 25 seconds the radio will pull it back in. To eject multiple CDs, press and hold the eject button until you hear a beep and EJECTING ALL CDS appears on the display with the single CD symbol flashing. The CD symbol will flash until a CD is ready to be removed. When the CD is ready to be removed it will eject part way from the radio and the display will change to a flashing REMOVE CD # with the single CD symbol flashing until the CD is removed. If the CD is not removed within 25 seconds the radio will pull it back in. After the CD is removed the radio will repeat the previous actions until all of the CDs have been removed or a CD is pulled back in.

Playing a Specific Loaded CD

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. A small bar will appear under the CD number that is playing, and the track number will appear.

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

(Reverse): Press and hold this button to reverse quickly within a track. You will hear sound at a reduced volume. Release this button to play the passage. T#, the elapsed time, and REV will appear on the display.

(Fast Forward): Press and hold this button to advance quickly within a track. You will hear sound at a reduced volume. Release the button to play the passage. T#, the elapsed time, and FWD will appear on the display.

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

    • To repeat the track you are listening to, press and release the RPT button. REPEAT ON and RPT will appear on the display. Press RPT again to turn off repeat play. REPEAT OFF will appear on the display and RPT will disappear from the display.
    • To repeat the CD you are listening to, press and hold the RPT button for more than two seconds. REPEAT ON and RPT will appear on the display. Press RPT again to turn off repeat play. REPEAT OFF will appear on the display and RPT will disappear from the display.
RDM (Random): With random, you can listen to the tracks 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 you are listening to in random order, press the RDM button. RANDOM TRACKS and RDM will appear on the display. Press RDM again to turn off random play. RANDOM OFF will appear on the display and RDM will disappear from the display.
    • To play the tracks on all of the CDs that are loaded, in random order, press and hold the RDM button for more than two seconds. You will hear a beep, RANDOM ALL CDS, and RDM will appear on the display. Press RDM again to turn off random play. RANDOM OFF will appear on the display and RDM will disappear from the display.
SEEK : Press the down arrow to go to the start of the current track, if more than eight seconds have played. Press the up arrow to go to the beginning of the next track. If either arrow is held or pressed more than once, the player will continue moving backward or forward through the CD. To scan the current CD, press and hold either SEEK arrow for more than two seconds. The CD will go to the next track, play the first 10 seconds, then go on to the next track. Press either SEEK arrow again to stop scanning. To scan all of the CDs loaded, press and hold either SEEK arrow for more than four seconds. The CD will go to the next CD, play the first 10 seconds of the first track, then go on to the next CD. Press either SEEK arrow again to stop scanning.

DISP (Display): Press this knob to switch between time, temperature, and the elapsed time of the track. To change the default on the display (CD#/Track#/Time, CD#/Track#/Temperature, or Track#/Elapsed Time/Temperature), press the knob until you see the display you want, then hold the knob for two seconds. The radio will produce one beep and the selected display will now be the default.

AUTO TONE/AUTO EQ (Automatic Equalization): Press this button to select the desired equalization setting while playing a CD. The equalization will be set whenever a CD is played. For more information, see "AUTO TONE" or "AUTO EQ" listed previously in this section.

BAND: 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.

SRCE (Source): Press this button to play a CD or to access the remote device, when listening to the radio.

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, perform the following steps:

  1. Turn the radio on and load it with at least one CD. See "LOAD" 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 in the display. If S-LIST is present, press the SONG LIST button to turn it off.
  3. Select the desired CD by pressing the numbered pushbutton and then use the SEEK left arrow to locate the track to be saved. The track will begin to play.
  4. Press and hold the song list button for two or more seconds to save the track into memory. When song list is pressed, one beep will be heard immediately. After two seconds of pressing song list continuously, two beeps will sound to confirm that the track has been saved and TRACK number ADDED will appear on the display.
  5. Repeat Steps 3 and 4 for saving other selections.

SONG LIST FULL will appear on the display if you try to save more than 20 selections.

To play the song list, press the song list button. One beep will be heard and SONG LIST will appear on the display. The recorded tracks will begin to play in the order that they were saved.

Seek through the song list by using the SEEK arrows. Seeking past the last saved track will return you to the first saved track.

To delete tracks from the song list, perform the following steps:

  1. Turn the CD player on.
  2. Press the song list button to turn song list on. SONG LIST will appear on the display.
  3. Press the SEEK arrows 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 will be heard immediately. After two seconds of continuously pressing the song list button, two beeps will be heard to confirm that the track has been deleted and TRACK number DELETED will appear on the display.

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 will be added to the end of the list.

To delete the entire song list, perform the following steps:

  1. Turn the CD player on.
  2. Press the song list button to turn song list on. S-LIST will appear on the display.
  3. Press and hold the song list button for more than four seconds. A beep will be heard, followed by two beeps after two seconds, and a final beep will be heard after four seconds. SONG LIST EMPTY will appear on the display indicating that 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 will be heard and S-LIST will be removed from the display.

CD Messages

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

    • 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 CD is dirty, scratched, wet, or upside down.
    • 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.