Comfort Controls - GMC YUKON DENALI 2000 Manual

Comfort Controls

Heater and Air Conditioning
Control System
Fan Knob
The knob on the left side of the heating system control
panel controls the fan speed. To increase airflow, turn
the knob toward HI. To decrease airflow, turn 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.
In OFF, while driving, air will flow through the floor
outlets. The mode knob will not redirect the airflow to
other selected outlet positions. This is normal operation
for the OFF position.
3-2
Temperature Knob
The middle knob on the control panel lets you select the
temperature of the air flowing into the passenger area of
your vehicle. Turn the knob clockwise toward the red
area for warmer air. Turn the knob counterclockwise
toward the blue area for cooler air.
Mode Knob
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 any two mode
settings to blend the flow of air.
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.
HEATER: This setting directs air through the
floor outlets.
DEFOG: This setting directs air to the heater
outlets and toward the windshield.
DEFROST: This setting directs air toward
the windshield.