With an OnStar subscription to the
Guidance Plan, an OnStar Advisor
can download a destination to the
vehicle or into the built-in navigation
system. If an OnStar Turn-by-Turn
route is in progress, all other
internal navigation functions are
disabled until the route is
completed.

When navigation is selected, the
OnStar Turn-by-Turn screens
display.

Turn-by-Turn Navigation

Touch MENU on the infotainment
display to go to the
Turn-by-Turn Menu.

The following options may display:

Plan Route (if the vehicle is off
the route)

Cancel

Plan Route

Select My Destination to display a
special version of the Maneuver
View. The Destination Address is
displayed in the Street Name and

the total distance to the destination
is displayed in the Distance to
Maneuver View. Touch DONE to
return to the Maneuver View.

Cancel a Route

If a route is in progress using either
the vehicle navigation system or the
OnStar Turn-by-Turn route, and a
new route is requested, the current
route in progress will be canceled.

An OnStar Advisor can cancel the
vehicle navigation system route.
Route guidance can be resumed by
selecting Resume To in the
Map Menu.

Global Positioning
System (GPS)

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

Navigation

Symbols

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

Problems with Route Guidance

and

If the System Needs

Service