GMC Yukon XL 2015 Owner's Manual page 203

8-2 Climate Controls
Front Climate Controls
Automatic Operation
The system automatically controls
the fan speed, air delivery, air
conditioning, and recirculation in
order to heat or cool the vehicle to
the desired temperature.
When the indicator light is on, the
system is in full automatic operation.
If the air delivery mode or fan
setting is manually adjusted, the
auto indicator turns off and the
selected settings are displayed.
To place the system in
automatic mode:
1. Press AUTO.
2. Set the driver and passenger
temperature.
To find your comfort setting, start
with 22°C (72°F) and allow the
system time to stabilize. Then
adjust the temperature as
needed for best comfort.
To improve fuel efficiency and to
cool the vehicle faster, recirculation
may be automatically selected in
warm weather.
The recirculation light will not come
on when automatically controlled.
@
Press to manually select
recirculation; press it again to select
outside air.
Do not cover the solar sensor on the
top of the instrument panel near the
windshield. This sensor regulates
air temperature based on sun load.
See Sensors later in this section.
Manual Operation
(On/Off): Press to turn the
climate control system on or off.
Outside air still enters the vehicle,
and is directed to the floor. This
direction can be changed by
pressing the air delivery mode.
9
(Fan Control): Turn clockwise
or counterclockwise to increase or
decrease the fan speed.
Press AUTO to return to automatic
operation.
Driver and Passenger
Temperature Control: The
temperature can be adjusted
separately for the driver and
passenger.
Turn the knob clockwise or
counterclockwise to increase or
decrease the driver or passenger
temperature setting.
SYNC (Synchronized
Temperature): Press to link the
passenger and rear climate
temperature settings to the driver
setting. The SYNC indicator light will
turn on. When the passenger or rear
climate settings are adjusted, the
SYNC indicator light turns off.
Air Delivery Mode Control: Press
-
, , , or to change the
direction of the airflow. An indicator
light comes on in the selected mode
button.