Outlet Adjustment - GMC Sierra Denali Classic 2007 Owner's Manual

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(Defog): Use this setting to clear the windows
of fog or moisture. Press the mode button to
select this setting. This setting will deliver air to
the floor and windshield outlets.
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(Defrost): Press this button to defrost the
windshield. The system will automatically control
the fan speed if you select defrost from AUTO
mode. If the outside temperature is 40°F (4°C) or
warmer, your air conditioning compressor will
automatically run to help dehumidify the air and
dry the windshield.
Rear Window Defogger
If your vehicle has this feature, the lines you see
on the rear window warm the glass. The rear
window defogger uses a warming grid to remove
fog from the rear window.
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(Rear): Press this button to turn on or off the
rear window defogger and heated mirrors, if
equipped. An indicator light in the button will come
on to let you know that the rear window defogger
and heated mirrors, if equipped, are activated.
The rear window defogger will turn off about
10 minutes after the button is pressed. If you need
additional warming time, press the button again.
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(Mirror): If your vehicle does not have a rear
defogger and is equipped with heated mirrors, your
vehicle will have this button to activate them.
Notice: Do not use a razor blade or sharp
object to clear the inside rear window. Do not
adhere anything to the defogger grid lines
in the rear glass. These actions may damage
the rear defogger. Repairs would not be
covered by your warranty.

Outlet Adjustment

Your vehicle has air outlets located in the center
and on the side of your instrument panel that allow
you to adjust the direction and amount of airflow
inside the vehicle. Move the louvers up or
down. Use the thumbwheel next to or underneath
the outlet to close the louvers. For the most
efficient airflow and temperature control, keep the
outlet in the fully opened position.
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