GMC 2007 Savana - Manual (Page 165)

To change the current mode, select one of the
following:
H
(Vent): Use this mode to direct air to the upper
outlets, with a little air directed to the floor outlets.
2 (Floor): Use this mode to direct most of the
air to the floor outlets.
9
(Fan): Turn the left knob clockwise or
counterclockwise to HIGH, MED (Medium) or
LOW to increase or decrease the fan speed in the
rear-seating area. Turn the knob to OFF to turn
off the fan.
Temperature Control: To increase or decrease
the temperature for the rear of the vehicle, turn the
right knob located on the climate-control panel.
The air-conditioning system on the main climate
control panel must be turned on to direct cooled air
to the rear of the vehicle. If it is not on, then the
temperature in the rear of the vehicle will remain at
cabin temperature.
Be sure to keep the area under the front seats
clear of any objects so that the air inside of your
vehicle can circulate effectively.
For information on how to use the main climate
control system, see Climate Control System on
page 159. For information on ventilation, see Outlet
Adjustment on page 162.
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