Buick 1994 Skylark Owner's Manual page 129

B/L (Bi-level)
This setting allows the outside air to flow through your
Buick in two ways. Cooler air is directed to the upper
portion of your body through the vent outlets. Slightly
warmer air is directed through the heater ducts and
defroster outlets.
Vent
Using vent will allow outside air to flow through the
instrwnent panel outlets.
Heater
This setting sends most of the air through the heater
'-
ducts. Adjust the temperature control to a warm setting.
If you have the engine coolant heater, you can use it in
cold weather (+2OoF/-8"C or lower) to heat your
vehicle's passenger area quicker. The engine coolant
heater warms the engine coolant which will ultimately
warm the passenger area more efficiently. (See "Engine
Coolant Heater" in the Index.)
Blend
This setting divides the air flow equally between the
heater and the defroster outlets.
Windshie1d:Defrost
This setting operates the defroster. Most of the air comes
out near the windshield. Use defrost when you get fog or
ice on the windshield.
Rear Window Defogger (Option)
The lines you see on the
rear window
warm
the
glass. Press the button to
start warming your
window. Pressing the-
button again will shut it off.
If you turn on the rear defogger while driving at or
above 45 mph (72 km/h), it will stay on as long as that
speed is maintained. You must press the button to shut it
off. If you drive below 45 mph for more than 1 0 minutes
the rear defogger will automatically shut off.
.
(.
NOTICE:
Scraping the inside of your rear window could
cut and damage the heater. Your warranty would
not cover this damage. Don'i put decals there;
you might have 'to scrape them
.. .
off.