Chevrolet 2007 HH7 Owner's Manual page 171

Operation
To change the current mode, select one of the
following:
H
(Vent): This mode directs air to the instrument
panel outlets.
)
(Bi-Level): This mode directs approximately
half of the air to the instrument panel outlets, and
then directs the remaining air to the floor outlets.
Cooler air is directed to the upper outlets and
warmer air to the floor outlets.
6
(Floor): This mode directs most of the air to
the floor outlets with some air directed to the
windshield and side windows.
The right knob can also be used to select defog or
defrost mode. Information on defogging and
defrosting can be found later in this section.
Recirculation mode is not allowed in this mode.
9
(Fan): Turn the center knob clockwise
or counterclockwise to increase or decrease the
fan speed. In any setting other than off, the fan will
run continuously with the ignition on. The fan
must be turned on to run the air conditioning (AC)
compressor.
(Off): To turn the fan off, turn the knob all the
9
way counterclockwise to the off position.
Temperature Control: Turn the left knob
clockwise or counterclockwise to increase or
decrease the temperature inside your vehicle.
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