Rear Air Conditioning And Heating System - GMC YUKON XL 2004 Owner's Manual

The knob has three speed positions. To increase the
flow of cooled air, turn the knob clockwise. To decrease
the flow of cooled air, turn it counterclockwise. To
turn the fan off, turn the knob to the off position.
To operate the rear system using the front control, just
turn the knob to the fan position you want.
Rear Control
To use the rear control, first turn the front control to the
AUX position. Then, the rear control can be used to
increase and decrease the airflow.
Rear Air Conditioning and Heating
System
If your vehicle is equipped with this system, there are
two rear heat and air conditioning controls. One control
is located in the overhead console and the other is
located in the headliner above the second row seats.
The system can be controlled from the front controls as
well as the rear controls.
Front Control
The front control has three knobs that control airflow
speed, temperature and airflow location.
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