GM Service Manual Online
For 1990-2009 cars only

The audio system has been designed to operate easily and give years of listening pleasure. You will get the most enjoyment out of it if you acquaint yourself with it first. Find out what your audio system can do and how to operate all its features, to be sure you're getting the most out of the advanced engineering that went into it.

The ignition must be in ACCESSORY or RUN for your audio system to work.

The audio system is operated using the menus located on the navigation system screen. The audio menus are explained in this section.

Playing the Radio

The audio system can be operated using the knobs and hard keys located on both sides of the navigation screen. See the navigation system overview under Introduction for more information on location.

(Power/Volume): Press this knob to turn the audio and navigation systems on and off. While the audio system is on, you can turn the knob clockwise or counterclockwise to increase or decrease the volume.

Finding a Station

BAND: Press this key to access the BAND screen and to switch between AM, FM1, FM2, or XM1 and XM2, if equipped. Each radio band has six station presets accessible.

TUNE: Use the joystick in the lower left corner of the navigation system to choose a radio station.

SEEK : Press the up or the down arrow to go to the next or to the previous station and stay there.

To scan stations, press and hold the SEEK up or down 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 SEEK arrow again to stop scanning.

To scan preset stations, press and hold the SEEK up or down arrow for more than four seconds. You will hear two beeps and PSCAN will be displayed, along with the highlighted preset. The radio will go to one of the preset stations, 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 seek and scan only to stations that are in the selected band and only to those with a strong signal.

Setting Preset Stations

The six multi-function keys located to the right of the navigation screen, allow you to store your favorite stations. You can store up to 30 stations (6 AM, 6 FM1, 6 FM2, 6 XM1 and 6 XM2, if equipped). To set preset stations, do the following:

  1. Turn the audio system on.
  2. Press the BAND key to select the desired band (AM, FM1, FM2, XM1 or XM2, if equipped).
  3. Locate the desired station using the SEEK key or the joystick.
  4. Press and hold one of the six keys located to the right of the navigation screen, until you hear a beep. Whenever you press that key while in the BAND menu, the station you set will return.
  5. Repeat the steps for each preset and source.

Audio Screen

FM1 Source Shown, Other Sources Similar


Object Number: 1139437  Size: B3

If the radio is on while the navigation system is in use, a smaller audio screen will appear, located on the left side of the map screen. This audio screen will display the current audio information, such as band and station.

FM2 Source Shown, Other Sources Similar


Object Number: 1251158  Size: B3
(Audio): Press the Audio hard key to display the audio menu. Several options are available for adjustment from this menu.
Object Number: 907064  Size: B3


Tone: Choose from six available settings to adjust the tone of the audio system. Use the joystick to move between Treble, Midrange, Bass, Balance and Fade. Use the joystick to move each setting to the desired level.

AVC (Automatic Volume Control): If your system has AVC, your audio system monitors the noise in the vehicle. Then, AVC automatically adjusts the volume level so that it always sounds the same to you. To use AVC, use the joystick to select on, to turn it off, select off.

From the Audio Menu, you may be able to use the right side hard keys to choose from four different equalization settings if your system has these:

Normal: This setting enhances the stereo effect.

Driver: This setting gives the driver the best sound quality.

Rear: This setting gives the rear seat passengers the best sound quality.

Spacious: This setting makes the listening space seem larger.


Object Number: 1215037  Size: B4
Speed Compensated Volume (SCV): If your system has SCV, your audio system adjusts automatically to make up for road and wind noise as you drive. Set the volume at the desired level. 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.

EQ (Equalizer): While in the Audio menu on some systems, you can use the keys labeled EQ1 through EQ5 to choose preset bass, midrange, and treble equalization settings if your vehicle is equipped with these. The CUSTOM key allows you to choose and set the equalization levels you desire. Use the joystick to move between Treble, Midrange and Bass, and to adjust each setting to the desired level. To set the levels, press and hold the CUSTOM key until you hear a beep. After adjustments are made, press the BAND key to go back to the preset station menu. Now that you have preset the station and the EQ setting, you can assign the EQ to the preset station. To do this, press and hold the desired preset station key until you hear a beep. The EQ setting will now be assigned to that station unless you decide to change it. If you were at the CD screen before setting an EQ and you press the CD hard key, you will be returned to the CD screen, and the EQ will be set to that screen until you change it.

See "Rear Seat Audio (RSA)", "Theft-Deterrent Feature", "Audio Steering Wheel Controls", and "Understanding Radio Reception", in your vehicle's owner's manual for more information.

Radio Data Systems (RDS)

Your audio system is equipped with a Radio Data System (RDS). Using RDS, the radio can do the following:

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

RDS features are only available on FM stations that broadcast RDS information. The RDS features on your radio rely on receiving specific RDS information from these stations. These features will only work when the RDS 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 you are tuned to an RDS station, the station name will appear on the display. RDS stations may provide a program type (PTY) for current programming and the name of the program being broadcast.

RDS Option Menu


Object Number: 1139526  Size: B3

Once you are at the FM screen, press the center of the joystick to bring up the RDS Option Menu. Here you will be able to choose from the following RDS options:

RDS Seek: This function allows the system to stop only on stations which broadcast one of the program types (PTY) selected in the PTY Selection menu. You may select All to allow the radio to stop on any radio station broadcasting RDS data. Press the SEEK up or down arrow to look for other stations with that PTY. If a station with the selected PTY is not found, the radio will return to the original station.

PTY (Program Type): The program types (PTY) you can select from include: Adult Hits, Classical, Classical Rock, College, Country, Information, Jazz, Language, News, Nostalgia, Oldies, Personality, Public, Rhythm and Blues, Religious Music, Religious Talk, Rock Music, Soft, Soft Rock, Soft R & B, Sports, Talk, Top 40 and Weather.


Object Number: 1139474  Size: B3

To select PTY preferences, do the following:

  1. From the RDS Option menu, press the PTY key to view the available PTYs.
  2. Use the joystick to select as many PTYs as desired.
  3. You may also select None to cancel selected PTYs, or Any to select all PTYs.

RDS Messages: This feature allows radio station messages to be displayed on the audio screen when they are received.

Alternate Frequency: This feature allows the radio to automatically switch to a stronger station in an RDS network that is playing the same network broadcast. While the frequency may change, the station call letters should stay the same, as they are in the same RDS network.

Regionalization: This feature allows the tuner to remain on the current RDS station, even if it departs from RDS network broadcast in favor of broadcasting local or regional content.

Traffic: This option allows you to hear traffic announcements. With this feature ON, if a traffic announcement is available, it will interrupt what you are currently listening to. When the traffic announcement is over, the previous audio selection will resume. When the Traffic feature is ON, TA will appear next to the clock on the bottom right corner of the screen. The radio will continue to search for stations with the capability to broadcast traffic information. When a traffic announcement has been found, TP will appear below TA. If you are in the main audio screen when a traffic announcement begins, TRAFFIC will be displayed.

Interrupt Volume: This feature allows you to set the volume level at which the audio system will play a traffic announcement. Use the joystick to choose this option, and to move the volume to the desired level.

XM™ Satellite Radio Service (48 Contiguous US States)

Your vehicle may be equipped with this feature. XM™ is a continental U.S. based satellite radio service that offers 100 coast to coast channels including music, news, sports, talk and children's programming. XM™ provides digital quality audio and text information, including 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).

XM™ Options


Object Number: 907060  Size: B3

Move the joystick up or down to scroll through a list of categories. Press SEEK while the change to window is up to seek to the first station in the selected category. Push the joystick left or right to scan through stations in the selected category.

When XM™ is active, the channel name and number, song title and artist will be displayed on the screen.

To access the XM™ Options, you must be in the Radio screen with the XM1 or XM2 band active. Select Options to access the XM™ Menu.


Object Number: 1326929  Size: B3

This menu allows you to seek or scan for stations based on their category. While in this menu you can use the joystick to scroll through the categories you want to seek to. Use the SCAN option at the bottom of the screen to go to the first available channel in that category.

If the category scan/seek lock is on, performing a scan/seek will scan/seek only in the selected category.

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).

XM Updating

Updating encryption code

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

No XM signal

Loss of signal

Your system is functioning correctly, but you are 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)

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

Channel Off Air

Channel not in service

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

Channel Unavail

Channel no longer available

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

No Artist Info

Artist Name/Feature not available

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

No Title Info

Song/Program Title not available

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

No CAT Info

Category Name not available

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

Not Found

No channel available for the chosen category

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

No Information

No Text/Informational message available

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

XM Theftlocked

Theft lock active

The XM receiver in your vehicle may have previously been in another vehicle. For security purposes, XM receivers cannot be swapped between vehicles. If you receive this message after having your vehicle serviced, check with the servicing facility.

XM Radio ID

Radio ID label (channel 0)

If you tune to channel 0, you will see this message alternating with your XM Radio 8 digit radio ID label. This label is needed to activate your service.

Unknown

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

If you receive this message when you tune to channel 0, you may have a receiver fault. Consult with your dealer.

Check XM Receiver

Hardware failure

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

See "Understanding Radio Reception" and "XM™ Satellite Radio Antenna System (48 Contiguous US States)" in your vehicle's owner's manual for more information.

Playing a Compact Disc

Remove the navigation map DVD from the slot and return it to its case. Insert a CD partway into the slot, label side up. The player will pull it in.

There will be a 12 to 15 second delay while the CD is read, before it begins to play. When the player begins to read a CD, the Disc Check in Process message will appear briefly to remind you of the delay. When the map DVD is reinserted and read, the DVD Check in Process message will appear briefly to remind you of the delay.

While playing a CD in the CD player, the navigation system is not available. A message will display if the NAV key is pressed. If your vehicle is equipped with Rear Seat Entertainment (RSE), you can play an audio CD while using the navigation system. See "Rear Seat Entertainment System" later in this section for more information.


Object Number: 1217651  Size: B3
CD (Compact Disc): Press this key to change to playing a CD when listening to the radio. The CD screen will then be displayed.

(Eject): Press this key to eject a CD.

Repeat: Press this key to repeat the track that is currently being played. Press Repeat again to turn this feature off.

Random: Press this key to play the tracks in random, rather than sequential, order. Press Random again to turn off random play.

(Forward): Press and hold this key to quickly advance within a track. As the CD advances, elapsed time will be displayed to help you find the correct passage. Release this key to play the passage.

(Reverse): Press and hold this key to quickly reverse within a track. As the CD reverses, elapsed time will be displayed to help you find the correct passage. Release this key to play the passage.

SEEK : Within two seconds, press and release the SEEK up arrow to advance to the next track, or the down arrow to return to the previous track.

Track Scan: Press and hold one of the SEEK arrows for two seconds or more to enter CD TRACK SCAN mode. A chime will sound to alert you that TRACK SCAN is active, and the first 10 seconds of each track on the disc will be played before advancing to the next track. Press one of the SEEK arrows again to stop the scan at the track currently being played.

BAND: Press the BAND key to switch to the radio when a CD is playing.

Compact Disc Messages

CD ERROR: If this message appears on the screen, the CD is not being read by the system. The CD could be dirty, scratched, wet, or upside down. You may also be driving on a very rough road. When the road becomes smoother, the CD should play.

NO MUSIC DISC: If this message appears on the screen, the map DVD is still inserted in the system. Press eject and return the map DVD to its case, then insert a CD. The CD should play.

NO DISC: If this message appears on the screen, the CD slot is empty. Insert a CD. The CD should play.

If a 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 your radio displays an error message, write it down and provide it to your dealer when reporting the problem.

See "Rear Seat Audio (RSA)", "Care of Your CDs and DVDs", and "Care of Your CD and DVD Player" in your vehicle's owner's manual for more information.