GMC 2007 Acadia Owner's Manual page 206

Manual Operation
The air delivery mode or fan speed can be
manually adjusted.
DC
(Fan): The buttons with the fan symbols let
you manually adjust the fan speed. Press the
up arrow to increase fan speed and the down
arrow to decrease fan speed.
Pressing a fan button while the system is off will
turn the system on. Pressing a fan button
while in automatic control places the fan under
manual control. The fan setting remains displayed
and the AUTO light turns off. The air delivery
mode remains in automatic control.
yN z
(Mode): Press the mode up and down
buttons to manually change the direction of
the airflow in the vehicle. Repeatedly press the
button until the desired mode appears on the
display. Pressing a mode button while the system
is off will change air delivery mode without
turning the system on. Press one of these buttons
while in automatic control to place the mode
under manual control.
206
The air delivery mode setting displays and the
AUTO light turns off. The fan remains under
automatic control.
H
(Vent): This setting delivers air to the
instrument panel outlets.
)
(Bi-Level): This mode directs air to the
instrument panel outlets and to the floor outlets.
A little air is directed towards the windshield
and side window 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 of the air directed
to the windshield, side window outlets, and
second row floor outlets. In this mode, the system
automatically selects outside air. Recirculation
cannot be selected in floor mode.
-
(Defog): See "Defogging and Defrosting" later
in this section.
@
(Recirculation): Press this button to turn
the recirculation mode on. When the button
is pressed, an indicator light comes on.