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Pontiac 1997 Grand Prix Owner's Manual page 164

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Heating
On cold days use FLOOR with the temperature knob all
the way in the red area. The system will bring in outside
air, heat it and send it to the floor ducts.
If your vehicle has an engine coolant heater, you can use
it to help your system provide warm air faster when it's
cold outside 0°F
(-
18
"C)
or lower. An engine coolant
heater
warns
the coolant your engine and heating
system use to provide heat. See "Engine Coolant
Heater" in the Index.
Ventilation
For mild outside temperatures when little heating or
cooling is needed, use UPPER, with the
A K
button off,
to direct outside air through your vehicle. Your vehicle
also has the flow-through ventilation system described
later in this section.
Defogging and Defrosting
Your system has two settings for clearing the front and
side windows. To defrost the windows quickly, use
DEFROST with the temperature knob all the way in the
red area. To warm passengers while keeping the
windows clean, use DEFOG.
Air Conditioning with Automatic and
Auxiliary Temperature Control
(If Equipped)
With this system, you set a "desired cabin" temperature.
You can then either let the system automatically control
airflow direction and amount (to maintain the desired
cabin temperature) or you can manually adjust it. The
system works best
if
you keep your windows closed
while using it.
3-4

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Grandprix 1997