Pontiac 1998 Grand Am Owner's Manual page 134

A m
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VENT: Use when outside temperatures are mild,
and little heating or cooling is needed. Airflow is
through the instrument panel outlets. Set the center
control knob to the temperature desired.
'fl
HEATER:
This setting brings heated air through
the heater ducts, and some through the windshield
defroster vents.
If you have the optional engine coolant heater (engine
block heater) and use it during cold weather, 0°F
(-
18
O
C) or lower, your heating system will more quickly
provide heat because the engine coolant is already
warmed. See "Engine Coolant Heater" in the Index.
v# BLEND: This setting divides airflow equally
between the heater ducts and the windshield defroster
vents.
w.
DEFROST This setting directs air through the
windshield defroster vents located on top of the
instrument panel.
Air Conditioning
On very hot days, open the windows long enough
to let hot, inside air escape. This reduces the time it
takes for your vehicle to cool down, which should help
fuel economy.
For quick cool-down on very hot days, use MAX with
the temperature knob all the way in the blue area. If the
setting is used for long periods of time, the air in your
vehicle may become too dry.
For normal cooling on hot days, use
A/C
with the
temperature knob in the blue area. The system will bring
in outside air and cool it.
On cool but sunny days, the sun may warm your upper
body,
but
your lower body may not
be
warm enough.
You can use BI-LEVEL with the temperature knob in
the middle. The system will bring in outside air and
direct it to your upper body, while sending slightly
warmed air to your lower body. You may notice this
temperature difference more at some times than
at others.
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