Defogging And Defrosting - GMC 2004 Canyon Owner's Manual

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(Air Conditioning): Your vehicle may have air
conditioning. Press this button to turn the air-conditioning
system on or off. An indicator light on the button will
come on to let you know the air conditioning is activated.
When the system is on, this setting cools and
dehumidifies the air entering your vehicle.
The air conditioning will not function if the fan is
turned off.
You may notice 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 you may sometimes notice a small amount of
water dripping underneath your vehicle while idling
or after turning off the engine. This is normal.
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Defogging and Defrosting

Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass.
This can be minimized if the climate control system is
used properly. There are two modes to clear fog or frost
from your windshield and side windows. Use the defog
mode to clear the windows of fog or moisture and warm
the passengers. Use the defrost mode to remove fog or
frost from the windshield more quickly. For best results,
clear all snow and ice from the windshield before
defrosting.
Turn the mode knob on the climate control panel
clockwise to select the defog or defrost modes.
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(Floor/Defog): This mode directs the air to the
windshield, the side window outlets, and to the
floor outlets. When you select this mode, 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 directs most of the air to the
windshield, and the side window outlets. When you
select this mode, 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.