GMC VUE User Manual
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70 Infotainment System

Global Positioning

System (GPS)

The navigation system determines the position of the vehicle by using satellite signals, various vehicle signals, and map data.

At times, other interferences such as the satellite condition, road conÞguration, the condition of the vehicle and/or other circumstances can interfere with the navigation systemÕs ability to determine

the accurate position of the vehicle.

The GPS shows the current position of the vehicle using signals sent by the GPS Satellites of the United States Department of Defense. When the vehicle is not receiving signals from the satellites, a symbol appears on the map screen. Refer to

Navigation Symbols on page 41.

This system may not be available or interferences may occur if any of the following is true:

¥Signals are obstructed by tall buildings, trees, large trucks, or a tunnel.

¥Objects are located on the rear shelf of the vehicle.

¥Satellites are being repaired or improved.

¥After-marketglass tinting has been applied to the vehicleÕs rear windshield.

Notice: Do not applyafter-marketglass tinting to the vehicle’s windows. Glass tinting interferes with the system’s ability to receive GPS signals and causes the system to malfunction.

The window might have to be replaced to correct the problem. This would not be covered by the warranty.

For more information if the GPS is not functioning properly, see

Problems with Route Guidance on page 71and If the System Needs Service on page 72.

Vehicle Positioning

At times, the position of the vehicle on the map may be inaccurate due to one or more of the following reasons:

¥The road system has changed.

¥The vehicle is driving on slippery road surfaces such as in sand, gravel, and/or snow.

¥The vehicle is traveling on winding roads.

¥The vehicle is on a long straight road.

¥The vehicle is approaching a tall building or a large vehicle.

¥The surface streets run parallel to a freeway.

Infotainment System 71

¥The vehicle has just been transferred by a vehicle carrier or a ferry.

¥The current position calibration is set incorrectly.

¥The vehicle is traveling at high speed.

¥The vehicle changes directions more than once, or when the vehicle is turning on a turn table in a parking lot.

¥The vehicle is entering and/or exiting a parking lot, garage, or a lot with a roof.

¥The GPS signal is not received.

¥A roof carrier is installed on your vehicle.

¥The vehicle is being driven with tire chains.

¥The tires are replaced.

¥The tire pressure for your tires is incorrect.

¥The tires are worn.

¥The Þrst time the map DVD is inserted.

¥The battery is disconnected for several days.

¥The vehicle is driving in heavy traffic where driving is at low speeds, and the vehicle is stopped and started repeatedly.

If problems are experienced with the navigation system, see

your dealer/retailer.

Problems with Route Guidance

Inappropriate route guidance could occur under one or more of the following conditions:

¥You have not turned onto the road indicated.

¥Route guidance may not be available when using automatic rerouting for the next right or left turn.

¥The route may not be changed when using automatic rerouting.

¥There is no route guidance when turning at an intersection.

¥Plural names of places may be announced occasionally.

¥It may take a long time to operate automatic rerouting during high-speeddriving.

¥Automatic rerouting may display a route returning to the set stopover if traveling to a destination without passing through a set stopover.

¥The route prohibits the entry of a vehicle due to a regulation by time or season or any other regulation which may be given.

¥Some routes may not be searched.

¥The route to the destination may not be shown if there are new roads, if roads have recently changed, or if certain roads are not listed on the map DVD.

See Database Coverage Explanations on page 72.