GMC 2010 Acadia Owner's Manual page 249

Automatic Operation
AUTO (Automatic): The system
automatically controls the inside
temperature, the air delivery, and
the fan speed.
To use automatic mode:
1. Press the AUTO button.
When AUTO is selected, the
current temperature(s) selected
and AUTO is shown on the
display. The current air delivery
mode and fan speed also
appear for approximately
five seconds.
When AUTO is selected, the
air conditioning and air inlet
are automatically controlled.
The air conditioning runs when
the outside temperature is over
4°C (40°F). The system is
automatically set to outside
air, unless it is hot outside and
then the air inlet changes to
recirculation mode to help
quickly cool the vehicle.
The recirculation indicator light
will come on.
2. Set the temperature for the
driver and passenger.
To find a comfortable setting,
start with a 22°C (73°F)
temperature setting and
allow about 20 minutes for the
system to regulate. Use the
driver's side or passenger side
temperature buttons to adjust
the temperature setting as
necessary. The system will
remain at the selected setting.
Choosing the warmest or coolest
temperatures does not cause
the vehicle to heat or cool more
quickly.
To avoid blowing cold air in cold
weather, the system delays
turning on the fan until warm
air is available. Press the fan
control to override this delay
and select the fan speed.
Climate Controls
Temperature Control
The driver and passenger side
temperature buttons are used
to adjust the temperature of the
air coming through the system.
The temperature can be adjusted
even if the system is turned
off since outside air still enters
the vehicle, unless the
recirculation mode is selected.
See Recirculation later in this
section.
Driver Side Temperature
Control: Press the + or
to increase or decrease the driver
side temperature. The driver side
temperature display will show the
temperature setting.
Passenger Side Temperature
Control: Press the + or
to increase or decrease the
passenger side temperature.
The passenger side display will
show the temperature setting.
8-5
buttons
buttons