GM Service Manual Online
For 1990-2009 cars only

This section includes basic information that you need to know about the map database.

The maps are stored on a DVD. The United States, Canada, and Puerto Rico are contained on one disc.

Detailed Areas

Road network attributes are contained in the map database for detailed areas. Attributes include information such as street names, street address, turn restrictions, etc. A detailed area includes all major highways, service roads, and residential roads. The detailed areas include points of interest (POI) such as: restaurants, airports, banks, hospitals, police stations, gas stations, tourist attractions, historical monuments, etc. The map database may not include data for newly constructed areas or map database corrections that are completed after the production of the disc. The navigation system provides full route guidance in the detailed map areas.

Limited Guidance Areas

Any area that is not classified as detailed, is a limited guidance area. Limited guidance streets are displayed on the map but route guidance may not be given on these streets. Some POI categories, such as the city center POI category, and some street addresses are included in the limited guidance areas.

The navigation system informs through voice prompts when you are traveling into a limited guidance area where route guidance is not available. The street maps and the directional arrow displayed on the navigation system can then be used to determine the remaining route to your destination.

Installing the DVD Map Disc

When a DVD Map Disc is installed, noise from the disc may occur, this is normal system operation.

The navigation system in this vehicle uses a DVD to store map information. When the system loads data from the disc, you may hear a very slight buzz sound from the navigation system. The sound is similar to that of a CD player seeking through different tracks. This is normal operation and may occur more frequently with the use of XM NavTraffic.

Your dealer/retailer may have installed the map DVD. If the map DVD was not installed, do the following to load it:

  1. Turn the ignition on.
  2. Press the (power) knob to turn the navigation system on or press the NAV, DEST, or MENU hard keys. If the MENU hard key is selected, press and hold until the NAV screen is active, or select the NAV tab manually.
  3. Touch the OK screen button to agree to the Caution screen, if it appears. If the map is in split screen mode, you must push the NAV tab button to get the full map screen.

DVD Map Disc Messages

If Disc Read Error appears on the display and/or the map disc comes out, it could be for one of the following reasons:

    • If the map disc was installed into the CD slot. See "Installing the DVD Map Disc" previously.
    • It is very hot, when the temperature returns to normal, the map disc should play.
    • You are driving on a very rough road. When the road becomes smoother, the map disc should play.
    • The map disc is dirty, scratched, wet, or upside down.

If any error occurs repeatedly or if an error cannot be corrected, contact your dealer/retailer.

Ejecting the DVD Map Disc

(DVD Map Disc Eject): Press to eject the DVD map disc. This button is located next to the upper disc slot.

Handling the DVD Map Disc

When handling the DVD map disc, be careful of the following:

    • Handle the disc very carefully to avoid contamination or flaws. Signals may not read out properly if the disc gets contaminated or flawed.
    • If the disc gets soiled, use a soft cloth to gently wipe it out from the center of the disc to the outside. Do not use photographic record cleaner, solvents, or other cleaners.
    • Do not use the disc to rest on while writing or drawing using any writing utensil or attach a seal to any of the sides or the disc.
    • Do not keep the disc in direct sunlight, high temperatures, or humidity.
    • After using the disc, place it back into the original case.

Map Adjustments

The system lets you adjust the scale of view on the map. Also, as you drive, the map scrolls automatically based on the direction of travel.

Map Scales

+ / - (Zoom In/Zoom Out): Touch the zoom in or out screen buttons or the scale on the bar to change the level of map detail. The scale appears on the screen once the zoom in or zoom out screen buttons are selected. The system adjusts the map accordingly. The scale of a map can range from 1/32 mi. (50 m) to 256 mi. (400 km). To change English or metric, see DIC Operation and Displays for more information.

Scrolling the Map


Object Number: 811648  Size: A1

Touch anywhere on the map screen and the scroll symbol appears. Use this feature to scroll across the map.

Move your finger in any direction on the map screen and the map continues to scroll in that direction until you remove your finger from the screen.

If scrolling while the vehicle is in P (Park), the system scrolls initially at a slower rate. It increases if you continue touching the map screen.

If scrolling while the vehicle is in motion, there is one scroll speed and a limited distance to scroll. Keep touching the map screen to scroll for a longer distance.

If you have used the scroll feature to scroll the map and the vehicle icon disappears off the screen, press the NAV (Navigation) key to return to the current vehicle location on the map.

The scroll feature on the map can be used to set a destination. See "From Map" under Destination for more information.

While scrolling on the map, press the GO screen button to calculate the route from the current position to the destination mark.