Pontiac 2007 G5 Owner's Manual page 153

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(Recirculate): Press this button to prevent
outside air and odors from entering the vehicle or to
help heat or cool the air inside the vehicle more
quickly. An indicator light above the button will
come on in this mode. The air conditioning
compressor also comes on. This mode is not
available for floor, defog and defrost modes. When
the recirculation button is pressed, the recirculate
indicator light will flash five times and outside air will
be delivered. Operation in this mode during periods
of high humidity and cool outside temperatures may
result in increased window fogging. If window
fogging is experienced, select the defrost mode.
Outside Air: This mode allows outside air to
circulate through the vehicle. This mode is
automatically active if recirculate is not selected.
There is no button for outside air.
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(Air Conditioning): If your vehicle has air
conditioning, press this button to turn the air
conditioning system on or off. When this button is
pressed, an indicator light above the button will
come on to let you know the air conditioning
is activated.
On hot days, open the windows to let hot inside
air escape; then close them. This helps to reduce
the time it takes for the vehicle to cool down. It
also helps the system to operate more efficiently.
For quick cool down on hot days:
1. Select the vent mode.
2. Select the recirculation mode.
3. Select air conditioning.
4. Select the coolest temperature.
5. Select the highest fan speed.
Using these settings together for long periods of
time may cause the air inside of the vehicle to
become too dry. To prevent this from happening,
after the air in the vehicle has cooled, turn off the
recirculation by pressing the button again.
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.
The air conditioning compressor cannot be turned
on when the fan is off.
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