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GMC 2007 Sierra - Dual Automatic Climate Control System

GMC 2007 Sierra
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Defogging and Defrosting
Fog or frost on the inside of windows is a result of
high humidity (moisture) condensing on the cool
window glass. This can be minimized if the climate
control system is used properly.
Turn the right knob to select the defog or
defrost mode.
-(Defog): This mode clears the windows of fog
or moisture and warm the passengers. The air
is directed to the windshield, floor outlets, and side
window vents.
0(Defrost): This mode removes fog or frost
from the windshield more quickly. A portion of the
air is directed to the windshield and the side
window vents, with some air directed to the floor
vents. The system will automatically force
outside air into the vehicle.
Do not drive the vehicle until all the windows
are clear.
Dual Automatic Climate
Control System
With this system, you can control the heating,
cooling, and ventilation in the vehicle. The vehicle
also has a flow-through ventilation system
described later in this section.
You can select different climate control settings for
the driver and passengers.
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