GMC 1996 Sierra Owner's Manual page 132

Mode Knob
Optional Climate Control System
The right knob
on
the control panel allows you to
choose the direction of air delivery. The control knob
can be placed
in
any position between two mode settings
to blend the flow of air.
+e
/J
VENT:
This setting directs air through the
instrument panel outlets.
+ '
VENT/HEAT Use this setting to divide airflow
between the floor outlets and instrument panel outlets.
+iJ
H E A T B ;
This setting directs air through the
floor outlets.
6 f l
DEFOG: This setting directs air to the heater
outlets and toward the windshield.
9
DEFROST:
This setting directs air toward
the windshield.
+*
e
(ii3,
Fan 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. If you have
the
air
conditioner on. moving the fan knob
to OFF
also turns
off the A/C
compressor.
3-2