Defogging And Defrosting - Oldsmobile 2000 Silhouette Owner's Manual

When the air conditioner compressor is on, you may
sometimes notice slight changes in your vehicle's engine
performance and power. This is normal. The system is
designed to help fuel economy while it maintains the
desired cooling level.
The air conditioner removes moisture from the air, so
you may sometimes notice water dripping from under
your vehicle's engine compartment when it is idling or
after it has been turned off. This is normal.
Heating
Turn the temperature knob clockwise (toward the red
area) to warm the air.
In the LOWER setting, outside air will be brought in
and sent through the floor outlets. The heater works best
if you keep your windows closed while using it.
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The BI LEVEL setting is designed for use on sunny
days when the air is only moderately warm or cool.
On days like these, the sun may adequately warm your
upper body, but your lower body may not be warm
enough. For the best results, turn the temperature
control knob to the middle position, and then adjust it
for comfort.
3-4
If you have the optional engine coolant heater and use
it during cold weather, 0 _ F (
heating system will provide heat more quickly because
the engine coolant is already warmed. See "Engine
Coolant Heater" in the Index.

Defogging and Defrosting

To rapidly defrost the windshield, turn the temperature
control knob all the way clockwise (to the red area) and
turn the mode knob to DEFROST. Adjust the fan to the
highest speed.
To keep the windshield clear and bring in heated air
through the heater ducts, turn the mode knob
to DEFOG.
When the temperature outside is above freezing, the air
conditioner compressor will run in these settings to help
remove moisture from the air.
Your vehicle is equipped with side window defogger
vents located on the top of the instrument panel. For
additional side window defogging, turn the mode knob
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to the BI LEVEL setting and adjust the fan to the
highest speed. Aim the side vents on the instrument
panel toward the side windows. For increased airflow to
the side vents, close the center vents.
18 _ C) or lower, your
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