Buick 2008 Allure Owner's Manual page 147

Operation
OFF: Turn the left knob to this position to turn the
climate control system off.
9
(Fan): Turn the knob by this symbol, located on
the left side of the climate control panel, clockwise
or counterclockwise to increase or decrease the fan
speed. The fan speed will be temporarily reduced
between the transition to a new mode. The fan will
resume the original speed when the transition to the
new mode is complete.
Temperature Control: Turn the center knob clockwise
or counterclockwise to increase or decrease the
temperature inside your vehicle.
Use the right knob to select from the following modes:
H
(Vent): This mode directs outside air to the
instrument panel outlets. If driving in city traffic, and
the vehicle is stopped and idling, or the weather is hot,
turning on the recirculation mode helps to prevent
the air inside the vehicle from becoming stale. After
five minutes recirculate will allow some outside air
into the vehicle.
)
(Bi-Level): This mode directs half of the air to
the instrument panel outlets, and the remaining air
to the floor outlets. Some air may be directed toward
the windshield. Slightly cooler air is directed to
the instrument panel outlets and warmer air is
directed to the floor outlets.
6
(Floor): This mode directs most of the air to
the floor outlets with some air directed toward the
side window outlets and a little air directed to the
windshield.
In this mode, the system will automatically use
outside air. The air conditioning compressor will
be engaged unless the outside temperature is
40°F (4°C) or below.
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