Cadillac 2005 DeVille Manual page 12

Calibrate Vehicle Speed Signal: If there are tire
pressure differences or if a spare tire is installed, the
navigation system will automatically recalibrate the
system. You may also choose to calibrate it yourself by
doing the following:
1. Touch Start to begin calibration.
2. Touch Return to exit this menu.
Display Units
This feature allows you to select either English or metric
measurements to appear for distances on the map.
Touch English or Metric to set the desired measurement.
Time to Destination
This feature allows you to view the estimated time to
travel from your current position to the destination, and
to reset the average speed to factory default settings.
Estimated travel time is based on calculated route
information and the vehicle's average speed. Touch ON
to turn this feature on, OFF to turn this feature off, or
Reset to restore vehicle speed default settings. With this
feature on, the estimated travel time to destination will
display along with the distance to destination.
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Quick POI (Point of Interest) Selection
This menu allows you to choose a point of interest
(POI), such as gas stations, restaurants, hotels, etc. to
be displayed on the map screen. You can also set a
destination to a specific POI.