2003 GMC YUKON climate settings

Temperature Knob
The middle knob on the control panel lets you select the
temperature of the airflowing into the passenger
area. Turn the knob clockwise toward the red area for
warmer air. Turn the knob counterclockwise toward
the blue area for cooler air.
Mode Knob
The right knob on the control panel allows you to
choose the direction of air delivery.
H(Vent):This setting directs the air through the
instrument panel outlets.
)(Bi-Level):Air is delivered through thefloor outlets
as well as the instrument panel outlets. Theflow can
be divided between vent andfloor outlets depending
upon where the knob is placed between the settings.
6(Floor):This setting directs most of the air through
thefloor outlets, and the rest of the air is divided
between the windshield defroster outlets and the side
window defroster outlets.
W(Defog):Airflow is delivered through thefloor
outlets, the windshield defroster outlets and the side
window defroster outlets. The airflow can be divided
betweenfloor and defrost depending upon where
the knob is placed between the settings.
1(Defrost):This setting directs most air through the
windshield defroster outlets, side window defroster
outlets and some through thefloor outlets.
Dual Climate Control System
With this system you can control the heating, cooling
and ventilation for your vehicle.
9(Fan):Turn the left knob clockwise or
counterclockwise to increase or decrease the fan speed.
Turn the knob to the off position to turn off the fan. 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. The temperature can also be adjusted
using the temperature levers.
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2003 - Yukon/Yukon XL

Dual Automatic Climate Control
System
With this system, you can control the heating, cooling
and ventilation in your vehicle. Your vehicle also
has aflow-through ventilation system described later in
this section.
You can select different climate control settings for the
driver and passengers.
Driver’s Side Temperature Knob
The driver’s side knob is used to adjust the temperature
of the air coming through the system on the driver’s
side. The temperature can be adjusted even if the
system is turned off. This is possible since outside airwill alwaysflow through the system as the vehicle is
moving forward unless it is set to recirculation mode.
See“Recirculation”later in this section.
Turn the knob counterclockwise or clockwise to lower or
increase the cabin temperature. The display will show
the temperature setting decreasing or increasing and an
arrow pointing to the driver will be displayed under
and to the left of the temperature setting.
Passenger’s Side Temperature Knob
The passenger’s side knob can be used to change the
temperature of the air coming through the system
on the passenger’s side of the vehicle. The temperature
can be adjusted even if the system is turned off. This
is possible since outside air will alwaysflow through the
system as the vehicle is moving forward unless it is
set to recirculation mode. See“Recirculation”later in this
section.
Turn the knob counterclockwise or clockwise to lower or
increase the cabin temperature. The display will show
the temperature setting decreasing or increasing and an
arrow pointing to the passenger will be displayed
under and to the right of the temperature setting.
The passenger’s temperature setting can be set to
match the driver’s temperature setting by pressing and
holding the AUTO button for four seconds. Both the
driver and passenger arrows will be displayed.
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2003 - Yukon/Yukon XL

When the weather is cool or damp, operating the system
in recirculation for extended periods of time may cause
fogging of the vehicle’s windows. To clear the fog, select
either defog or front defrost.
You may also notice that the A/C compressor will run
while in recirculation mode. This is normal and helps to
prevent fogging.
9(Off):Press this button to turn off the entire climate
control system. Outside air will still enter the vehicle, and
will be directed to thefloor. This direction can be changed
by pressing the mode button. The temperature can also
be adjusted using either temperature knob. Press the up
or down arrows on the fan switch, the defrost button, the
AUTO button, or the air conditioning button to turn the
system on when it is off.
Display
If you press the MODE button to select an air delivery
mode, the display will change to show you the selected
air delivery mode. After ten seconds, the display will
change to show the driver temperature setting and the
selected mode.
If you press the up or down arrows on the fan switch,
the display will change to show the selected fan speed.
After ten seconds, the display will change to show
the driver temperature setting and the selected mode.Whenever you press AUTO, the display will change to
show the following:
•the current driver’s set temperature and an arrow
forfive seconds,
•the current passenger’s set temperature setting and
an arrow forfive seconds and
•the automatic air delivery mode and fan speed.
If the driver’s and passenger’s temperature settings are
the same when AUTO is pressed, the temperature
setting and both arrows will be displayed forfive
seconds along with the automatic air delivery mode and
fan speed. After thefive second update, the display
will change to show the temperature setting, both arrows
and AUTO.
Air Conditioning
#
(Air Conditioning):Press this button to turn the air
conditioning (A/C) compressor on and off. The
snowflake symbol will appear on the display when the
A/C is on.
When air conditioning is selected or in AUTO mode, the
system will run the air conditioning automatically to cool
and dehumidify the air entering the vehicle. If you select
A/C off while in front defrost, defog or recirculation, the
A/C snowflake symbol will turn off, but the A/C
compressor will still run to help prevent fogging.
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2003 - Yukon/Yukon XL

Fan Knob
The fan knob on the left side of the control panel
adjusts the fan speed. To increase airflow, turn the knob
clockwise. To decrease airflow, turn it counterclockwise.
To turn the fan off, turn the knob to the off position.
9(Off):An off setting, located on the front climate
control panel also allows the driver to turn off the
rear seat passenger seat controls from the front seat.
Temperature Knob
The middle knob on the control panel lets you select the
temperature of the airflowing into the passenger
area. Turn the knob clockwise toward the red area for
warmer air. Turn the knob counterclockwise toward
the blue area for cooler air.
Mode Knob
The right knob on the control panel allows you to
choose the direction of air delivery.
H(Vent):This setting directs the air through the
headliner outlets.
)(Bi-Level):Air is delivered through thefloor outlets
as well as the headliner outlets. Theflow can be
divided between vent andfloor outlets depending upon
where the knob is placed between the settings.
6(Floor):This setting directs most of the air through
thefloor outlets.
To use the rear control,first turn the front control to the
AUX position. Then, the rear control can be used to
adjust the airflow speed, temperature, and airflow
location.Rear Controls
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2003 - Yukon/Yukon XL

Fan Knob
The fan knob on the left side of the control panel
adjusts the fan speed. To increase airflow, turn the knob
clockwise. To decrease airflow, turn it counterclockwise.
To turn the fan off, turn the knob to the off position.
9(Off):Turn the knob to this position to turn the rear
seat comfort controls on or off.
Temperature Knob
The middle knob on the control panel lets you select the
temperature of the airflowing into the passenger
area. Turn the knob clockwise toward the red area for
warmer air. Turn the knob counterclockwise toward
the blue area for cooler air.
Mode Knob
The right knob on the control panel allows you to
choose the direction of air delivery.
H(Vent):This setting directs the air through the
headliner outlets.
)(Bi-Level):Air is delivered through thefloor outlets
as well as the headliner outlets. Theflow can be
divided between vent andfloor outlets depending upon
where the knob is placed between the settings.
6(Floor):This setting directs most of the air through
thefloor outlets.
Rear Air Conditioning and Heating
System and Electronic Climate
Controls
If your vehicle is equipped with this system, there are
controls located in the overhead console and on
the back of the console in the rear seat area. The
system can be controlled from the overhead controls or
the rear controls.
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2003 - Yukon/Yukon XL

The overhead control has three knobs that control
airflow speed, temperature and airflow location.
To adjust the airflow speed turn the knob located on the
left side of the control panel. To adjust the air
temperature turn the temperature knob on the center of
the control panel to increase or decrease the
temperature. To regulate airflow location adjust the right
knob on the control panel.
The system also AUTO settings that can automatically
control the fan speed and/or mode of the air delivery
to the rear seating area.
9(Off):An off setting, located on the overhead
climate control panel also allows the driver to turn off the
rear seat passenger seat controls from the front seat.The rear seat controls have the following settings:
O(On/Off):Press this button to turn the rear seat
comfort controls on or off.
%(Mode):Press this button to select the air delivery,
and setting, and AUTO mode.
b(Temperature):Press this button up or down to
increase or decrease the temperature setting.
w9x(Fan):Press this button up or down to adjust
the fan speed. Front Controls
Rear Controls
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2003 - Yukon/Yukon XL