1. If the vehicle is located in a parking garage, tunnel, or an area where there are tall
buildings or large trucks, those obstructions may be interfering with the GPS signal.
Once the vehicle moves out of this area, the GPS signal should work.
2. If there are objects placed on top of the instrument panel, these may be interfering
with the GPS receiver. Remove any objects from the dashboard.
3. After-market glass tinting will interfere with the system’s ability to receive GPS
signals and cause the system to malfunction. Customers might have to replace the
window to correct the problem. This would NOT be covered by their warranty.
4. You may not be able to receive a GPS signal if the satellites are being repaired or
improved.
If the vehicle is not in the correct position on the map, see the instructions for
recalibrating the vehicle.
Refer to the following for further info:
Recalibrating the System
Section VI: Voice Recognition
Using Voice Commands
To use voice recognition, do the following:
1. Press the Talk symbol steering wheel control and release it when you hear a
beep. If the audio system is on, it will mute.
2. Clearly state the command. The commands are listed in the Navigation System
Supplement (words in brackets are optional). Commands are available for
navigation, radio, CDs, auxiliary devices, and OnStar.
Refer to the following for further info:
Storing Voice Tags
Setting a Destination through Voice Recognition
Troubleshooting Voice Recognition
