GMC 2007 Savana - Manual (Page 160)

) (Bi-Level): This mode directs about half of the
air to the instrument panel outlets, then directs
most of the remaining air to the floor outlets. Some
air may be directed toward the windshield.
6 (Floor): This mode directs most of the air to
the floor outlets with some air directed to the
outboard outlets (for the side windows) and some
air directed to the windshield.
The right knob can also be used to select the
defrost and defog modes. Information on defogging
and defrosting can be found later in this section.
9 (Fan): Turn the left knob clockwise or
counterclockwise to increase or decrease the fan
speed.
Temperature Control: Turn the center knob
clockwise or counterclockwise to increase
or decrease the temperature inside your vehicle.
If your vehicle has air conditioning, your heating/air
conditioning controls will look like this:
On hot days, open the windows to let hot inside
air escape; then close them. This helps to reduce
the time it takes for your vehicle to cool down.
It also helps the system to operate more efficiently.
A/C (Air Conditioning): This setting will begin
to cool and dehumidify the air inside of your
vehicle.
MAX A/C (Maximum Air Conditioning): Turn the
right knob to MAX A/C for maximum cooling.
This setting cools the air the fastest, by
recirculating the inside air.
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