Cadillac 2007 XLR Owner's Manual page 288

GPS TIME: The current GPS time will be
displayed to the right of this screen button. Touch
GPS TIME to set the navigation system time to
match current GPS time. If the seconds for
the present minute are greater than thirty when
GPS TIME is selected, the clock will round
up to the next minute.
Daylight Saving Time: Touch this screen button
to increase the time setting by one hour. Then
touch GPS TIME to save the new setting. If
the screen button is light blue, the daylight savings
time feature is on. If the button is dark blue, the
daylight savings time feature is off.
TIME ZONE: The selected time zone will appear
to the right of this screen button. Touch this
screen button to toggle between time zones and
select the desired one. The time of the selected
zone will be displayed to the right of the GPS TIME
screen button. To set the clock to the new
setting, touch GPS TIME.
If the system is not receiving GPS information,
you can still set the time manually as described
above but the GPS time and Daylight Saving Time
features will not be available.
Touch Return to go back to the previous menu.
288
Screen Adjust Menu
The following options are available from
this menu:
K
(Contrast): Touch the plus (+) or minus ( )
signs to adjust the contrast of the screen.
You will see the screen change. Touch SET to
confirm the setting.
!
(Brightness): Touch the plus (+) or minus ( )
signs to adjust the brightness of the screen.
You will see the screen change. Touch SET to
confirm the setting.