Cadillac 1996 DeVille Owner's Manual page 154

Ventilation Tips
The direction of airflow to the rear seats can also be
adjusted. Move the center lever to direct airflow toward
the upper or floor outlets. To direct aifflow from side to
side, move the lever located in the center of each vent to
the right or left.
e Keep the hood and front air inlet free
of ice, snow or
any other obstruction (such as leaves). The heater
and defroster will work far better, reducing the
chance of fogging the inside of the windows.
When you enter a vehicle in cold weather, adjust the
fan to the highest speed for a few moments before
driving off. This helps clear the intake ducts of snow
and moisture, and reduces the chance of fogging the
inside of the windows.
Keep the air path under the front seats clear of
objects. This helps circulate air throughout your
vehicle.
Heated Windshield (Option)
The heated windshield will remove ice or frost in cold
weather.
1. Remove snow that is piled up on the windshield.
2. Start your Cadillac and leave it in
PARK (P).
3. Press the DE-ICE button. A light will come on to
tell you it is working. Try not to use other electrical
equipment while the system is working.
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