Global Positioning; System (Gps); Vehicle Positioning - Cadillac CTS Navigation Manual

64 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
configuration, the condition of the
vehicle and/or other circumstances
can interfere with the navigation
system's 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 Symbols.
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-market glass tinting has
.
been applied to the vehicle's
rear windshield.
Notice: Do not apply after-market
glass 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 If the
System Needs Service and
Problems with Route Guidance.

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