Climate Controls; Climate Control System (With Air Conditioning) - GMC Sierra 2008 Owner's Manual

Climate Controls

Climate Control System
(With Air Conditioning)
With this system you can control the heating, cooling,
and ventilation for your vehicle.
Operation
9
(Fan): Turn the left knob clockwise or
counterclockwise to increase or decrease the fan speed.
Turn the knob all the way counterclockwise to turn the
front system off.
3-26
Temperature Control: Turn the center knob clockwise
or counterclockwise to increase or decrease the
temperature inside the vehicle.
Use the right knob to select from the following modes:
The right knob can be positioned between two modes to
select a combination of those two modes.
H
(Vent): This mode directs air to the instrument
panel outlets.
)
(Bi-Level): This mode directs half of the air to the
instrument panel outlets and half to the floor outlets.
6
(Floor): This mode directs most of the air to the
floor outlets with some air directed to the windshield
and side window outlets. In this mode, the system will
automatically select outside air. Recirculation cannot be
selected in floor mode.
The right knob may also be used to select the defrost
and defog mode. For more information, see "Defogging
and Defrosting" later in this section.
:
(Outside Air): Press this button to turn the outside
air mode on. When the button is pressed, an indicator
light will come on. When this mode is on, outside air will
circulate throughout the vehicle. The outside air mode
can be used with all modes, but it cannot be used
with the recirculation mode.