GMC 2010 Yukon/Yukon XL Owner's Manual page 249

For vehicles with this system, the rear controls are three
knobs located in the headliner. The system can also be
controlled with the front controls.
A. Fan Control
B. Temperature Control
C. Air Delivery Mode Control
Press the REAR button on the front climate
control system to turn the rear climate control system on
or off. An indicator comes on when the rear system is
on. See Climate Control System on page 4 18 or Dual
Automatic Climate Control System on page 4 20.
The rear system can also be turned off by turning the
rear fan knob to the
This mode matches the rear climate
control to the front climate control airflow settings.
It comes on when REAR is pressed the first time.
This mode directs rear seating
airflow according to the settings of the rear controls.
It comes on when any rear control is adjusted.
counterclockwise to increase or decrease the
airflow temperature into the passenger area.
Turn clockwise or counterclockwise to
increase or decrease the fan speed.
counterclockwise to change the direction of the airflow.
Air is directed through the headliner outlets.
Air is directed through the floor and
headliner outlets. The rear system floor outlets
are located directly behind the second row seats.
The flow can be divided between vent and floor outlets
depending upon where the knob is placed between the
settings.
Air is directed to the floor outlets. The rear
system floor outlets are located directly behind the
second row seats.
position.
Turn clockwise or
Turn clockwise or
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