GM Service Manual Online
For 1990-2009 cars only

Notice: Before adding any sound equipment to the vehicle, such as an audio system, CD player, CB radio, mobile telephone, or two-way radio, make sure that it can be added by checking with your dealer/retailer. Also, check federal rules covering mobile radio and telephone units. If sound equipment can be added, it is very important to do it properly. Added sound equipment can interfere with the operation of the vehicle's engine, radio, or other systems, and even damage them. The vehicle's systems can interfere with the operation of sound equipment that has been added.

Notice: The chime signals related to safety belts, parking brake, and other functions of the vehicle operate through the navigation system. If that equipment is replaced or additional equipment is added to the vehicle, the chimes may not work. Make sure that replacement or additional equipment is compatible with the vehicle before installing it. See "Accessories and Modifications" in the Index of the vehicle's owner manual.

Playing the Radio

(Power/Volume): Press this knob to turn the audio system on and off. Turn the knob to increase or to decrease the volume. Press and hold this knob for more than two seconds to turn off the navigation system, the Rear Seat Entertainment (RSE) video screen, and Rear Seat Audio (RSA). If the vehicle has not been turned off, the RSE and the RSA can be turned back on by pressing this knob. The last active source will resume playing.

(Tuning Knob): Turn this knob to go to the next or previous frequency.

AUDIO: Press this key to display the audio screen. Press the key to switch between AM, FM, or XM, if equipped, DISC, or AUX (Auxiliary), or select the screen button. See CD Player , DVD Player , or Auxiliary Devices for more information.

Finding a Station

There are three ways to find/change stations:

    • If viewing a full map screen, use the SEEK keys and the (tune) knob. You cannot change preset stations from the full map screen.

AM source shown, other sources similar


Object Number: 1685917  Size: B3
    • If viewing a full map screen, select the source screen (AM, FM, XM, CD, etc..) button. The display will split between the audio screen and the map screen. All station-changing functions can be performed from this screen.

FM source shown, other sources similar


Object Number: 1685918  Size: B3
    • If you do not want to view a split screen or you are not on a map screen, press the AUDIO hard key to enter the audio menu.
AM/FM/XM: Select the source (AM, FM, or XM, if equipped) screen button or press the AUDIO key repeatedly until the desired source is selected.

FM source shown, other sources similar


Object Number: 1685919  Size: B3
Category: Select the screen button, located in the middle of the screen, to receive a list of all of the selected band stations in the area. Use the up and down arrow screen buttons to scroll the frequencies. Select the desired frequency. XM lists will also contain a category to select and the stations or channels that pertain to the category. For XM, select the left and right arrow screen buttons to change categories. The station information will appear on the display. See "Radio Menu" later in this section to add and remove XM categories from the category list. When listening to XM stations, you will be able to select all of the categories when using the right and left arrow screen buttons on the main audio screen. Categories cannot be selected from the category list screen when they have been removed. FM lists may also contain a category to select if stations in your area support Radio Data Systems (RDS).

Refresh List: Select this screen button to refresh the list of stations.

When viewing a map screen the name of the station or channel will appear on the display.

SEEK / SEEK: To seek stations, press the right or left arrow keys to go to the next or previous station. To scan stations, press and hold either arrow for more than two seconds. The radio will go to a station, play for a few seconds, then go on to the next station. To stop scanning, press either arrow again.

Storing Radio Station Presets

This feature allows you to store up to 30 preset stations. You can mix AM, FM, and XM (if equipped). To store presets:

  1. Press the (power) knob to turn the system on.
  2. If viewing a map screen, select the source screen button, press the AUDIO key, or press the FAV (favorite) key.
  3. Select the band.
  4. Seek, scan, or tune to the desired station, to select the station.
  5. Press and hold one of the preset screen buttons for more than two seconds or until you hear a beep.
  6. Repeat the steps for each preset.

Sound Menu


Object Number: 1841006  Size: B3
SOUND: Press this key or press the MENU key to access the Sound menu to adjust the treble, midrange, bass, fade, balance, and equalization.

Setting the Tone

TREBLE: Select and hold the plus (+) or minus (-) sign to increase or decrease the treble. If a station is weak or noisy, decrease the treble.

MID (Midrange): Select and hold the plus (+) or minus (-) sign to increase or decrease the midrange.

BASS: Select and hold the plus (+) or minus (-) sign to increase or decrease the bass.

Adjusting the Speakers

L/R (Left/Right) (Balance): To adjust the balance between the left and the right speakers, select and hold the L or R screen buttons.

Front/Rear (Fade): To adjust the fade between the front and the rear speakers, select and hold the Front or Rear screen buttons.

Automatic Equalization

With automatic equalization you can select a customized equalization setting designed for Talk. Select the Talk screen button to adjust the tone settings to an automatic preset for talk radio.

Select Custom to adjust the bass, treble, and midrange settings as desired.

The system will save separate settings for each source.

Rear Seat Audio (RSA)

If the Rear Seat Audio (RSA) system has been turned on, you can turn off the RSA by selecting the Rear Seat Audio Off screen button. See "Rear Seat Audio (RSA)" in the Index of your vehicles owner manual.

Radio Menu


Object Number: 1685921  Size: B3

Press the MENU key to enter the configure menu screen, then press the MENU key repeatedly until Radio is selected or select the Radio screen button to make changes for radio information displayed, number of preset pages, XM categories, and automatic volume control.

Additional Information Displayed

Select the Additional Information Displayed screen button to turn station, channel, CD, and MP3 information on or off. The information will display when the screen button is highlighted.

When the screen button is highlighted the system will display, when it is available, for the following; FM: RDS category name and radio text, XM: Song Title and Artist Name, CD: CD text, MP3: tag information.

Number of Preset Pages

Select the Number of Preset Pages screen button to change the number of preset pages, 1 through 6. Each preset page can contain five preset stations. Select the desired numbered screen button.

Automatic Volume Control

Automatic Volume Control: With automatic volume control, your audio system adjusts automatically to make up for road and wind noise as you drive. To use Automatic Volume Control:

  1. Set the volume at the desired level.
  2. Press the MENU key to enter the menu screen, then press the MENU key repeatedly until Radio is selected or touch the Radio screen button
  3. Press the Automatic Volume Control screen button.
  4. Touch the LOW, MEDIUM, or HIGH screen buttons. Each higher setting allows for more compensation at faster vehicle speeds.

Then, as you drive, automatic volume control 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 automatic volume control off, touch the OFF screen button.

Remove/Add XM Categories

Select the Remove/Add XM Categories screen button to remove or add XM categories when selecting from the category list screen. The list of XM categories will appear on the screen. Use the up and down arrow screen buttons to scroll through the list. The categories to remove will be highlighted and the categories to add will be dark in color. Select the category that you would like to add or remove. Select the Restore All Categories screen button to add all categories that have been removed.

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:

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

This system relies on 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.

The RDS system is always on. When information is broadcast from the FM station you are listening to, the station name or call letters will display on the audio screen. RDS may provide 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 and Canada. XM™ offers a large variety of coast-to-coast channels including music, news, sports, talk, traffic/weather (U.S. subscribers), and children’s programming. XM™ provides digital quality audio and text information that includes the channel name and number, song title, and artist name. A service fee is required in order to receive the XM™ service. For more information, contact XM™; In the U.S. at www.xmradio.com or call 1-800-852-XMXM (9696) or in Canada at www.xmradio.ca or call 1-877-GET-XMSR (438-9677).

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

XM™ Radio Messages

Radio Display Message

Condition

Action Required

XM 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 XM 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 four second delay)

The audio 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 the presets, 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. The system is working properly.

No Title Info

Song/Program Title not available

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

No CAT Info

Category Name not available

No category information is 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.

No Information

No Text/Informational message available

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

XM Theftlocked

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 dealer/retailer.

XM 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 dealer/retailer.

Check XM Receiver

Hardware failure

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