Global Positioning System (GPS)
- Obstruction of the GPS can occur in a large city with tall buildings; in parking garages; around airports; in tunnels, underpasses, or parking garages; or in an area with very dense trees. If GPS signals are not available, the OnStar system should still operate to call OnStar. However, OnStar could have difficulty identifying the exact location.
- In emergency situations, OnStar can use the last stored GPS location to send to emergency responders.
- A temporary loss of GPS can cause loss of the ability to send a Turn-by-Turn Navigation route.
The Advisor may give a verbal route or may ask for a call back after the vehicle is driven into an open area.
See also:
Problems with Route Guidance
Inappropriate route guidance may 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 rerout ...
RDS (Radio Data System)
The radio may have RDS. The RDS feature is available for use only on FM
stations that broadcast RDS information. This feature only works when the
information from the radio station is available. In ...
Call Waiting
Call waiting must be supported on the cell phone and enabled by the wireless
service carrier.
- Press to answer an incoming call when another call is active. The original call
is placed on hold.
...