Dual Climate Control System - GMC Sierra Classic 2007 Owner's Manual

6
(Floor): This mode directs most of the air
through the floor outlets, and the rest of the air is
divided between the windshield defroster outlets
and the side window defroster outlets.
W
(Defog): Airflow is delivered through the floor
outlets, the windshield defroster outlets, and the
side window defroster outlets. The air flow can be
divided between floor and defrost depending upon
where the knob is placed between the settings.
1
(Defrost): This setting directs most air through
the windshield defroster outlets, side window
defroster outlets, and some through the floor
outlets.

Dual Climate Control System

With this system you can control the heating,
cooling, and ventilation for your vehicle.
Fan Control
9
(Fan): Turn the left knob clockwise or
counterclockwise to increase or decrease the fan
speed. Turn the knob to the off position to turn
off the fan. If the knob is in off, outside air will still
enter the vehicle and will be directed based on
the position of the mode knob. The temperature
can also be adjusted using the temperature levers.
Turn the right knob clockwise or counterclockwise
to direct the airflow inside of your vehicle.
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