GMC 2009 Acadia - Manual (Page 451)

Symbols
The following symbols are the most common symbols
that appear on a map screen.
The vehicle is shown as
this symbol. It indicates the
current position and the
direction the vehicle
is traveling on the map.
The distance to destination
symbol indicates the
distance to the final
destination.
The waypoint symbol
displays on the map after
a stopover has been
added to the route.
The waypoint symbols are numbered one through three,
depending on how many stopovers have been set.
This symbol appears when
the time to the destination
is not available or while you
are scrolling on the map.
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