Comfort Controls; Electronic Climate Control System - GMC 2002 Yukon Denali Owner's Manual

Comfort Controls

Electronic Climate Control System

Fan Knob
The knob on the left side of the electronic climate
control panel regulates the fan speed. To manually
increase airflow, turn the knob clockwise. To manually
decrease airflow, turn it counterclockwise.
OFF: If the knob is in OFF, outside air will still enter
the vehicle, and will be directed based on the position of
the mode knob.
3-2
AUTO (Automatic): If the knob is in AUTO, the
fan speed will vary as the system maintains the
selected temperature.
When both the fan knob and mode knobs are in the
AUTO position, the system will then automatically
maintain the desired cabin temperature selected.
Manual operation is also available.
Temperature Knob
The middle knob on the control panel lets you select the
desired air temperature in your vehicle. Turn the knob
clockwise toward 82 for warmer air. Turn the knob
counterclockwise toward 66 for cooler air. When the
system is set for automatic operation, sensors will
regulate the fan speed.
(Full hot): If you turn the temperature knob past 82 _ F
(28 _ C), the system will go into the "full hot" mode.
The system will remain at that maximum heating setting
and the fan will blow at the speed to which the fan knob
is set. If the fan is in AUTO, it will run at full speed.
(Full cold): If you turn the temperature knob past 66 _ F
(19 _ C), the system will go into the "full cold" mode.
The system will remain at that maximum cooling setting
and the fan will blow at the speed to which the fan knob
is set. If the fan is in AUTO, it will run at full speed.