GM Service Manual Online
For 1990-2009 cars only

Operator Controls

Controls

US

Export

Band

Changes between AM/FM1/FM2/WX

CD

Displays the CD control screen

DVD

Displays the DVD control screen

Changes to TV mode

Tune/Seek

Allows the system to tune to the next preprogrammed station or to seek stations in the area

Adjust

Displays the audio adjust screen

Displays the audio/TV adjust screen

Repeat

Press to repeat the last voice guidance

Map

Press to enter map mode

Route

Initiates the route planning routine

Setup

Press to change system settings

Tilt

Press and hold to access DVD

Press and hold to access DVD. Momentarily depress to tilt the display screen.

Navigation System Components

The navigation system contains the following components:

    • The navigation radio
    • The global positioning system (GPS) antenna

The export navigation system (w/U3S, U3Q) contains the following additional components:

    • The vehicle information communication system (VICS) microprocessor card (w/U3Q)
    • The VICS optical/microwave beacon antenna (w/U3Q)
    • The 4 TV antennae integrated into the rear window glass (w/U3S)
    • The VICS FM antenna integrated into the rear glass (w/U3Q)
    • The TV antenna module to control antenna selection (w/U3S)
    • The 2 TV antenna amplifiers (w/U3S) DeVille only
    • The auxiliary RCA video jacks (w/U3S)

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, the audio system and the export TV system.
    • The navigation system map with routing information displayed on the navigation radio screen.
    • The navigation system map with routing information displayed on the navigation radio screen.
    • Provides verbal guidance to the operator.

Global Positioning System (GPS) Antenna

The global positioning system (GPS) antenna is attached to the bottom of the rear shelf and can be accessed through the rear compartment. The GPS antenna is powered through the same coaxial cable used to send the signals to the NAV.

TV and VICS Antenna - Export, w/U3S, U3Q

These several antennae are conductive traces placed on the inside of the rear window glass.

TV Antenna Module - Export, w/U3S, U3Q

The TV antenna module is located behind the trim on the right rear side of the passenger compartment. The TV antenna module is used by the navigation radio to automatically select the antenna combination that provides the strongest TV signal to the navigation radio. The TV antenna module also provides the vehicle information communication system (VICS) FM signal to the VICS card (export, w/UE9).

TV Antenna Amplifiers - Export, w/U3S

The TV antenna amplifiers are mounted behind the trim on each side of the rear window. The TV antenna amplifiers are powered by the TV antenna module through the same coaxial cable used to carry their signals to the TV antenna module. They are attached to two of the four TV antenna trace patterns in the rear window glass.

Auxiliary RCA Video Jacks - Export, w/U3S

The auxiliary RCA video jacks, used to attach a remote video device, are located at the rear of the center console. These connections may be used to provide audio and video input from a video player or camera to the navigation radio.

VICS Module - Export, w/U3Q

The vehicle information communication system (VICS) card, an export only dealer-installed option, is installed inside the navigation radio. The VICS card uses signals from the optical/microwave beacon antenna and the rear glass VICS antenna via the TV antenna module to convey routing information to the NAV. The NAV either revises planned routing or relays the VICS information to the operator through the screen of the navigation radio and the voice guidance system.

VICS Optical/Microwave Beacon Antenna - Export, w/U3Q

The vehicle information communication system (VICS) optical/microwave beacon antenna (export, w/UE9) is a dealer-installed option. The antenna, which is mounted on the right side of the instrument panel, picks up signals through the front window glass. A coaxial cable carries the power to and signals from this antenna to the navigation radio.

Audio System Interface

The navigation radio controls the audio system by sending key-pressed messages to the remote radio and displaying audio information.