This section presents basic information needed to operate the navigation system.

Use the hard keys located on the navigation system along with the available touch-sensitive screen buttons on the navigation screen to operate the system. See Navigation System Overview for more information.

Once the vehicle is moving, various functions will be disabled to reduce driver distractions.

Hard Keys

The following hard keys are located on the navigation system:

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

(Tune):  Turn the tune knob to go to the next or previous radio station or disc track or chapter. See Navigation Audio System , CD Player , or DVD Player for more information.

(DVD Map Disc Eject): Press the eject button, located next to the upper disc slot, to eject the DVD map disc. See Maps for more information.

(Load): Press the load button to load CDs or audio/video DVDs. See CD Player or DVD Player for more information.

(CD/DVD Eject): Press the eject button, located under the load button, to eject CDs or audio/video DVDs. See CD Player or DVD Player for more information.

(Tilt): Press this key up or down to tilt the screen.

AUDIO: Press this key to access the full Audio screen to change AM, FM, XM™ Satellite Radio Service (if equipped), CD/DVD, and auxiliary input. See "Audio" under Navigation Audio System for more information.

FAV (Favorite): Press this key to access the preset stations. See "Storing Radio Station Presets" under Navigation Audio System for more information.

(Phone): Press this key to access calling through OnStar®. See Phone for more information. See "OnStar® System" in the Index of your vehicle's owner manual for more information.

(Sound): Press this key to access the Sound screen to adjust bass, midrange, treble, and Digital Signal Processing (DSP). See "Sound Menu" under Navigation Audio System for more information.

DEST (Destination): Press this key to access the Destination Entry screen to plan a destination. See Destination for more information.

CONFIG (Configure Menu): Press this key to adjust features for sound, radio, navigation, and the display. See Configure Menu for more information.

NAV (Navigation): Press this key to view your vehicle's current position on the map screen. Each press of this key will cycle through Full Map and the tab that displays the current audio source (AM, FM, CD, etc.). Full Map displays the screen in full map view. Selecting the audio tab will split the screen between the map screen and the current audio source screen menu. See "Audio" under Navigation Audio System for more information.

RPT (Navigation Repeat): Press this key to repeat the last voice guidance prompt.

(Seek): Press the seek arrows to seek and scan radio stations, to seek tracks on a CD, and to seek chapters on a DVD. See Navigation Audio System , CD Player , or DVD Player for more information.

Touch-Sensitive Screen Buttons

Touch-sensitive screen buttons are located on the screen. When a screen button has been selected, a beep will sound. Screen buttons are highlighted when a feature is available.

Alpha-Numeric Keyboard

Letters of the alphabet, symbols, punctuation, and numbers, when available, will display on the navigation screen as an alpha or numeric keyboard. The alpha keyboard will display when the system requires entry of a city or street name.

All characters are touch-sensitive screen buttons. Touch a character to select it.

A-Y (Accent Alphabet): Select this screen button to select letters with accent symbols. This button may toggle to A-Z.

A-Z (Alphabet): Select this screen button to select letters from the alphabet. This button may toggle to A-Y.

0-9 (Numbers): Select this screen button to select numbers.

(Space): Select the space screen button to enter a space between characters or the words of a name.

Backspace: Select this screen button if an incorrect character has been selected.

To make name selections easier, the system will only highlight the characters that can follow the last one entered. For example, if a Z is entered, a T may not be available for selection.

If a name is not display after entry, it may need to be entered differently or the map DVD disc may not contain that information. See Database Coverage Explanations for more information.