Navigation System

Navigation System Description and Operation

Each item in the list below represents topics covered in detail below.

* Audio System Description
* Navigation System Components
* Navigation Radio
* Global Positioning System (GPS) Antenna
* Route Guidance
* Auxiliary RCA Video Jacks (If Equipped)
* Voice Recognition
* Points of Interest

Audio System Description

The Navigation radio operates similar to a traditional radio. For information on the audio description and operation, refer to Radio/Audio System Description and Operation Radio/Audio System.

Navigation System Components

The navigation system contains the following components:

* Navigation Radio
* GPS Antenna
* Auxiliary RCA Video Jacks (If Equipped)
* Map Data

Navigation Radio

This component acts as the operator interface for the navigation system, provides the data input from the operator to the navigation system and provides navigation information to the operator via the display screen. The navigation radio is located in the center of the instrument panel. The navigation radio provides the following:

* A display screen-All navigation, audio and TV functions are displayed on this screen.
* Soft key buttons on the display to allow selection from menus and to operate the navigation system and the audio system
* The navigation system map with routing information displayed on the navigation radio screen
* Provides verbal guidance to the operator
* Connection to the GPS antenna, which provides the vehicle position information

Global Positioning System (GPS) Antenna

The GPS antenna is located in the upper center of the I/P. The GPS antenna is powered through the same coaxial cable used to send the signals to the NAV radio. Interference to the system may occur if any of the following exist:

* Signals are obstructed by objects such as, tall buildings or trees.
* Metallic objects located on the dashboard
* Aftermarket glass tinting has been applied to the vehicles windshield.

Route Guidance

The map will display the route to the selected destination. Voice prompts alert the operator of upcoming events, turns and arrivals at the destination. The navigation system will automatically recalculate if the route is not followed. The navigation radio uses data received from the GPS satellites as well as the vehicle speed signal to accurately display the current position of the vehicle. The map data must be in the NAV radio for route guidance.

Auxiliary RCA Video Jacks (If Equipped)

The auxiliary RCA video jacks are used to attach a remote video device. These connections may be used to provide audio and video input from a remote device such as a video game console or camera to the rear seat entertainment system.

Map Data

This component provides the map information for navigation and route guidance. This data is stored on different media formats depending on the navigation radio. The possible formats are:

* DVD - All navigation radios except RPO GMQ.
* Compact Flash - RPO GMQ navigation radios.

Voice Recognition

The Navigation System voice recognition allows for hands-free operation of navigation and audio system features. The voice recognition can be used when the ignition is in accessory or ON, or when retained accessory power (RAP) is active. This feature only works if the map data is in place and the AGREE button has been pressed. For a complete list of available commands, refer to the Owners Manual Navigation Supplement and/or Personalization in the Owners manual.

Points of Interest

Points of interests (POI) are locations that are frequently visited. Points of interest can be can be displayed on the map or set as a destination. The following are some of the available POI:

* Gas Station
* Restaurant
* College
* Police Station