Buick 2014 Regal Infotainment System Manual page 57

If a route is in progress using
OnStar Turn-by-Turn navigation
system, and a route is requested
using the vehicle navigation system,
a pop-up is displayed confirming
that the Turn-by-Turn route should
be canceled.
OnStar is able to remotely cancel
the vehicle navigation system
routes. If an Advisor is requested
while connected to OnStar, all active
vehicle navigation routes in the
vehicle will be canceled. There will
be no confirmation, and this update
will immediately be reflected on the
display. Route guidance can be
resumed by selecting the Resume
Route screen button in the
Map Menu.
The position of the vehicle is
determined by using satellite
signals, various vehicle signals, and
map data.
At times, other interference such as
the satellite condition, road
configuration, condition of the
vehicle, and/or other circumstances
can affect 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
GPS Satellites. When the vehicle is
not receiving signals from the
satellites, a symbol appears on the
map screen. See
.
This system might not be available
or interference can occur if any of
the following are true:
Signals are obstructed by tall
buildings, trees, large trucks,
or a tunnel.
Satellites are being repaired or
improved.
For more information if the GPS is
not functioning properly, see
and
.
At times, the position of the vehicle
on the map could 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 sand,
gravel, or snow.
The vehicle is traveling on
winding roads or long straight
roads.
The vehicle is approaching a tall
building or a large vehicle.
The surface streets run parallel
to a freeway.