Rear Air Conditioning System - GMC 2004 Yukon XL Owner's Manual

Rear Air Conditioning System

If your vehicle is equipped with the optional rear air
conditioner it has two rear air conditioning fan speed
selectors. One fan speed selector is located in the
overhead console and the other is located in the
headliner above the second row seats.
Front Control
To increase and decrease the flow of cooled air to the
rear vents, turn the knob to the fan speed you want.
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.
3-34
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.