DC(Fan): Press the D or C buttons to increase or
decrease the fan speed. Pressing either button cancels
automatic operation and the system goes into manual
mode. Press AUTO to return to automatic operation.
The blower may reduce during an Onstar
®
session
to limit background noise.
If the airflow seems low when the fan speed is at
the highest setting, the passenger compartment air
filter might need to be replaced. For more information,
see Passenger Compartment Air Filter on page 3-29 and
Scheduled Maintenance on page 6-4.
# (Air Conditioning): Press this button to override the
automatic system and turn the air conditioning system on
or off. When in AUTO, the air conditioning compressor
will come on automatically, as necessary.
The air conditioning system removes moisture from the
air, so a small amount of water might drip underneath the
vehicle while idling or after turning off the engine. This is
normal.
M / F (Recirculation/Outside Air): Press this
button to switch between recirculation and outside air.
Whenever the button is pressed, the indicator light
comes on for the mode being used. The recirculation
mode recirculates air inside the vehicle. It can be used
to prevent outside air and odors from entering the
vehicle or to help cool the air inside the vehicle more
quickly. Press the auto button to have the system select
the best air delivery mode for your temperature setting.
Recirculation is not available in the defrost mode and
automatically turns off 10 minutes after defog is selected.
This helps to limit window fogging in the vehicle.
Using recirculation for long periods of time could cause
the air inside the vehicle to become too dry or stuffy.
To prevent this from happening, after the air in the vehicle
has cooled, select outside air or press the auto button.
The outside air mode pulls fresh air from outside the
vehicle. Outside air is always selected in defrost mode to
prevent fogging.
_ (Heated Windshield Washer, If Equipped): For
more information, see Windshield Washer on page 3-12.
3-26
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