GMC 1996 Savana Van Owner's Manual page 118

Fan Knob
Mode Knob
The knob on the left side of the heating system control
panel controls the fan speed. The knob has four speed
positions. To increase airflow, move the knob toward
HI. To decrease airflow, move it toward LO. To turn the
fan off, move the knob to OFF.
Temperature Knob
The middle knob lets you select the relative temperature
of the air flowing into the passenger area of your
vehicle. This knob will allow you to adjust the relative
air temperature independently of the function knob
setting. Move the knob clockwise to the red area for
warmer air. Move the knob counter clockwise to the
blue area for cooler air.
The right knob changes the heater set.ting.
/J
VENT This sett.ing directs air through the
instrument panel vents.
' / J
VENTMEAT Use this setting to divide airflow
between the heater floor vents and instrument panel vents.
+#
HEAT: This setting directs air through the heater
floor vents. This setting is useful for cold weather.
+ '
HEATPDEFROST: Use this setting to divide
airflow between the heater floor vents and windshield.
+ e
+e
e
w e
DEFROST: This setting with the defrost symbol
directs air through the windshield defroster vents.
This setting is useful when you have fog or ice on
the windshield.
3-2