GMC 2004 Canyon - Manual (Page 143)

Mode Knob
The right knob on the control panel is used to direct the
airflow inside your vehicle. Turn the knob to select
one of the following modes:
H
(Vent): Select this mode to direct air to the
instrument panel outlets.
\
(Bi-Level): Select this mode to direct approximately
half of the air to the instrument panel outlets, and the
remaining air to the floor outlets and the defroster
and side window outlets. Cooler air is directed to the
upper outlets and warmer air to the floor outlets.
[
(Floor): Select this mode to direct air to the floor
outlets. Recirculation does not work in this mode.
Mode Buttons
@
(Recirculation): If your vehicle has air
conditioning, you will have the recirculation feature.
This mode recirculates air inside the cabin, and prevents
outside air from coming in the vehicle. It can be used
to prevent outside odors from entering your vehicle and
cool the air inside your vehicle more quickly. Press this
button to turn the recirculation mode on or off.
An indicator light on the button will come on to let you
know the recirculation mode is activated.
Recirculation is only available in the bi-level and vent
modes. If you push the recirculation button while
the system is in any other mode, the light on the button
will flash to indicate that recirculation is not available.
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