Buick Regal User Manual page 61

This calculates for the most
fuel efficient route based on speed
and distance.
Under the Route Options menu,
there are route preferences
that by default are all enabled.
A checkmark placed next to each
preference indicates this. All of
these preferences are used when
calculating the route. If any of these
preferences are unselected, the
route will be calculated without
including these preferences.
Deselect to avoid
major roads.
Deselect to avoid
toll roads.
Deselect to avoid
ferries.
Deselect to avoid
tunnels.
avoid time restricted roads.
Deselect to avoid
car trains.
Several functions can be performed
after a destination has been
entered. Press the Home Page
Destination Entry screen button to
access the Destination Menu
screen.
Deselect to
Press Cancel Guidance to cancel
the current route.
Select Destination List to view
options for organizing waypoints.