Chevrolet 2010 Colorado Owner's Manual page 165

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(Floor/Defog): This mode clears the windows of fog
or moisture. Air is directed to the floor, windshield, and
side window outlets. When this mode is selected, the
system runs the air conditioning compressor unless
the outside temperature is near freezing or below.
Recirculation is not available in this mode.
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(Defrost): This mode clears the windshield of fog
or frost more quickly. Air is directed to the windshield
and side window outlets. When this mode is selected,
the system runs the air conditioning compressor
unless the outside temperature is near, or below
freezing. Recirculation is not available in this mode.
Do not drive the vehicle until all the windows are clear.
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(Air Conditioning): Press to turn the air
conditioning system on or off. An indicator light on the
button comes on to show that the air conditioning is on.
The fan control must be on to use the air conditioning.
There might be a slight change in engine performance
when the air conditioning compressor shuts off and
turns on again. This is normal. The system is designed
to make adjustments to help with fuel economy while
still maintaining the selected temperature.
The air conditioning system removes moisture from the
air, so a small amount of water might drip under the
vehicle while idling or after turning off the engine.
This is normal.
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(Recirculation): Press to turn the recirculation
mode on or off. An indicator light on the button comes
on to show that the recirculation mode is on. This mode
recirculates and helps to quickly cool the air inside
the vehicle. It can be used to prevent outside air and
odors from entering the vehicle.
The recirculation mode cannot be used with floor/defog,
defrost, or defogging modes. If recirculation is selected in
these modes, the indicator will flash or not come on.
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