Global positioning system (gps), Vehicle positioning, Positioning – GM GPS Receiver User Manual

Page 80: System (gps), 80 infotainment system

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Cadillac SRX Navigation System - 2011

80

Infotainment System

12/24 HR Format: Select the
12 HR screen button for standard
time; select the 24 HR screen
button for military time.

Day + or Day −: Press the day + or
day − display buttons to increase or
decrease the day.

Display: Press the Display screen
button to turn the display of the
clock on the screen on or off.

Global Positioning
System (GPS)

The position of the vehicle is
determined 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. See
Navigation Symbols on page 54.

This system might not be available
or interferences can 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.

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 could be inaccurate due to
one or more of the following
reasons:

.

The road system has changed.

.

Driving on slippery road surfaces
such as in sand, gravel and/
or snow.

.

Traveling on winding roads or
long straight roads.

.

Approaching a tall building or a
large vehicle.

.

The surface streets run parallel
to a freeway.

.

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

.

The current position calibration
is set incorrectly.

.

Traveling at high speed.

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