GMC 2008 Acadia - Manual (Page 179)

Fan Knob
Turn the left knob clockwise or counterclockwise to
increase or decrease the fan speed. Turn the knob all
the way counterclockwise to turn the rear system off.
Temperature Knob
The middle knob on the control panel lets you select
the temperature of the air flowing into the passenger
area. Turn the knob clockwise or counterclockwise for
warmer or cooler air.
Mode Knob
The right knob on the control panel lets you choose
the direction of the air flow.
H
(Vent): This setting directs the air through the
headliner outlets.
)
(Bi-Level): This setting directs the air through the
rear floor outlets under the third row seat, as well as
the headliner outlets. The flow can be divided between
headliner and floor outlets depending upon where
the knob is placed between the settings.
6
(Floor): This setting directs the air through the
floor outlets. The rear system floor outlets are located
under the third row seats.
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