GMC 2006 Sierra - Manual (Page 199)

Climate Controls
Climate Control System
Fan Knob
The fan knob on the left side of the control panel
adjusts the fan speed. To increase airflow, turn the knob
clockwise. To decrease airflow, turn it counterclockwise.
To turn the fan off, turn the knob to the off position.
9 (Off): If the fan is off, outside air will still enter the
vehicle, and will be directed based on the position of
the mode knob. The temperature can also be adjusted
using the temperature knob.
Temperature Knob
The middle knob on the control panel lets you select the
temperature of the air flowing into the passenger area.
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.
H
(Vent): This setting directs the air through the
instrument panel outlets.
)
(Bi-Level): Air is delivered through the floor outlets
as well as the instrument panel outlets. The flow can
be divided between vent and floor outlets depending
upon where the knob is placed between the settings.
6
(Floor): This setting directs most of the air through
the floor outlets, and the rest of the air is divided between
the windshield defroster outlets and the side window
defroster outlets.
W
(Defog): Airflow is delivered through the floor outlets,
the windshield defroster outlets and the side window
defroster outlets. The air flow can be divided between
floor and defrost depending upon where the knob is
placed between the settings.
3-21