2010 GMC ACADIA air condition

Climate Controls 8-3
Using recirculation for long periods
of time could cause the air inside of
the vehicle to become too dry. To
prevent this from happening, after
the inside of the vehicle has cooled,
turn the recirculation mode off.
The air conditioning system
removes moisture from the air, so
water might drip under the vehicle
while idling or after turning off the
engine. This is normal.
@(Recirculation):Press to turn
the recirculation mode on or off. An
indicator light comes on when
recirculation is on. When the engine
is turned off, the recirculation mode
automatically turns off and must be
re-selected when the engine is
turned on again.
This mode recirculates and helps to
quickly cool the air inside the
vehicle. It can be used to prevent
outside air and odors from entering
the vehicle.
The recirculation mode cannot be
used with floor, defrost, or defogging
modes. If recirculation is selected in these modes, the indicator flashes
three times and turns off. The air
conditioning also comes on when
this mode is activated unless the
outside air temperature is less than
4°C (40°F). While in recirculation
mode the windows can fog when
the weather is cold and damp. To
clear the fog, select either the defog
or defrost mode and increase the
fan speed.
REAR (Rear Climate Control):
Press to turn the rear heating and
air conditioning on or off. See
Rear
Climate Control System (Rear
Climate Control Only)
on page 8‑9or Rear Climate Control System
(Rear Climate with Rear Seat Audio)
on page 8‑10.
Rear Window Defogger
The rear window defogger uses a
warming grid to remove fog from the
rear window.
<(Rear Window Defogger):
Press to turn the rear window
defogger on or off. The rear window
defogger stays on for about 10 minutes, before automatically
turning off. The defogger will also
turn off when the engine is
turned off.
Do not drive the vehicle until all the
windows are clear.
For vehicles with heated outside
rearview mirrors, fog or frost is
cleared from the surface of the
mirror when
Notice: Do not use anything
sharp on the inside of the rear
window. If you do, you could cut
or damage the warming grid, and
the repairs would not be covered
by the vehicle warranty. Do not
attach a temporary vehicle
license, tape, a decal or anything
similar to the defogger grid.

8-4 Climate Controls
Dual Automatic Climate Control System
The heating, cooling, and ventilation in the vehicle can be controlled with
this system.
A. Fan Control
B. AUTO
C. Defrost
D. Recirculation
E. REAR (Rear Climate Control)
F. Air Delivery Mode Control
G. Driver Side Temperature Control
H. DisplayI. Power (On/Off)
J. Rear Window Defogger
K. Air Conditioning
L. PASS (Passenger)
M. Passenger Side Temperature
Control Display Function
Each time the temperature, mode,
or fan control buttons are pressed,
the climate control display shows
that function along with the inside
temperature setting. The outside
temperature is displayed on the
instrument panel cluster.
O(On/Off):
Press to turn the
climate control system on or off.
While the system is off, outside air
still enters through the floor outlets,
but the air delivery mode can be
adjusted.
The climate control system will also
turn on if either the fan control,
defrost, AUTO, or air conditioning
buttons are pressed.

Climate Controls 8-5
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. 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 −buttons
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 −buttons
to increase or decrease the
passenger side temperature. The
passenger side display will show the
temperature setting.
PASS (Passenger): Press to set
the passenger temperature to match
the driver temperature setting. The
PASS indicator will turn off. When

8-6 Climate Controls
the passenger temperature setting
is different than the driver setting,
the PASS indicator comes on.
Manual Operation
The air delivery mode or fan speed
can be manually adjusted.
D/C(Fan Control):Press to
increase or decrease the fan speed.
Pressing
DorCwhile in automatic
control places the fan speed under
manual control.
The air delivery mode remains in
automatic control. The fan setting
still displays, but the word AUTO no
longer displays, and the AUTO
button indicator light turns off.
H/G(Air Delivery Mode
Control): Press to change the
direction of the airflow in the vehicle.
Repeatedly press
HorGuntil the
desired mode appears on the
display. Pressing a mode button
while the system is off changes the
air delivery mode without turning the system on. Press a mode button
while in automatic control to place
the system into manual control.
The air delivery mode setting still
displays, but the word AUTO no
longer displays, and the AUTO
button indicator light turns off.
H(Vent):
Air is directed to the
instrument panel outlets.
)(Bi-Level): Air is divided
between the instrument panel and
floor outlets. Some air is directed
towards the windshield and side
window outlets. Cooler air is
directed to the upper outlets and
warmer air to the floor outlets.
6(Floor): Air is directed to the
floor outlets, with some of the air
directed to the windshield, side
window, and second row floor
outlets. In this mode, the system
uses outside air.
-(Defog): This mode clears the
windows of fog or moisture. Air is
directed to the windshield, floor
outlets, and side window vents. When this mode is selected, the
system turns off recirculation and
runs the air conditioning compressor
unless the outside temperature is
less than 4°C (40°F). Do not drive
the vehicle until all the windows are
clear.
0(Defrost):
Press to turn the
defrost on or off. This mode quickly
clears the windshield of fog or frost.
Air is directed to the windshield,
side window, and floor vents. In this
mode, outside air is pulled inside
the vehicle. The air conditioning
system runs automatically in this
setting, unless the outside
temperature is less than 4°C (40°F).
Do not drive the vehicle until all the
windows are clear.
While in defrost mode, if the PASS
button is pressed, the PASS button
indicator flashes three times to
show that the passenger climate
control system cannot be activated.
If the passenger temperature
buttons are adjusted while in defrost
mode, the driver temperature

Climate Controls 8-7
indicator will change. The
passenger temperature will not be
displayed.
When returning to bi-level, vent,
or floor mode, the previous
temperature settings displays in
place of any change made while in
defrost mode.
Air Conditioning
#(Air Conditioning):Press to
turn the air conditioning (A/C) on
and off. An indicator light comes on
when A/C is on.
The A/C does not work when the
outside temperature is below 4°C
(40°F). If
#is pressed the indicator
flashes three times and turns off to
show that the A/C mode is not
available. If the A/C is on and the
outside temperature drops below a
temperature which is too cool for air
conditioning to be effective, the A/C
indicator turns off to show that the
A/C mode has been canceled. On hot days, open the windows
briefly to let hot inside air escape.
This helps reduce the time it takes
for the interior of the vehicle to
cool down.
The air conditioning system
removes moisture from the air, so
water might drip under the vehicle
while idling or after turning off the
engine. This is normal.
@(Recirculation):
Press to turn
the recirculation mode on or off. An
indicator light comes on when
recirculation is on. When the engine
is turned off, the recirculation mode
automatically turns off and must be
re-selected when the engine is
turned on again.
This mode recirculates and helps to
quickly cool the air inside the
vehicle. It can be used to prevent
outside air and odors from entering
the vehicle. The recirculation mode cannot be
used with floor, defog, or defrosting
modes. If recirculation is selected in
these modes, the indicator flashes
three times and turns off. The air
conditioning compressor also comes
on when this mode is activated.
While in recirculation mode the
windows can fog when the weather
is cold and damp. To clear the fog,
select either the defog or defrost
mode and increase the fan speed.
REAR:
Press to turn the rear
heating and air conditioning on or
off. See Rear Climate Control
System (Rear Climate Control Only)
on page 8‑9or Rear Climate
Control System (Rear Climate with
Rear Seat Audio) on page 8‑10.

8-12 Climate Controls
Operation Tips
.Clear away any ice, snow,
or leaves from the air inlets at
the base of the windshield that
can block the flow of air into the
vehicle.
.Use of non-GM approved hood
deflectors can adversely affect
the performance of the system.
.Keep the path under all seats
clear of objects to help circulate
the air inside the vehicle more
effectively.
.If fogging reoccurs while in vent
or bi-level modes with mild
temperature throughout the
vehicle, turn on the air
conditioner to reduce windshield
fogging.

Driving and Operating 9-5
An emergency like this requires
close attention and a quick decision.
If holding the steering wheel at the
recommended 9 and 3 o'clock
positions, it can be turned a full
180 degrees very quickly without
removing either hand. But you have
to act fast, steer quickly, and just as
quickly straighten the wheel once
you have avoided the object.
The fact that such emergency
situations are always possible is a
good reason to practice defensive
driving at all times and wear safety
belts properly.
Off-Road Recovery
The vehicle's right wheels can drop
off the edge of a road onto the
shoulder while driving.
If the level of the shoulder is only
slightly below the pavement,
recovery should be fairly easy. Ease
off the accelerator and then, if there
is nothing in the way, steer so that
the vehicle straddles the edge of the
pavement. Turn the steering wheel
8 to 13 cm (3 to 5 inches), about
one-eighth turn, until the right front
tire contacts the pavement edge.
Then turn the steering wheel to go
straight down the roadway.
Loss of Control
Let us review what driving experts
say about what happens when the
three control systems—brakes,
steering, and acceleration —do not
have enough friction where the tires
meet the road to do what the driver
has asked.
In any emergency, do not give up.
Keep trying to steer and constantly
seek an escape route or area of
less danger.
Skidding
In a skid, a driver can lose control of
the vehicle. Defensive drivers avoid
most skids by taking reasonable
care suited to existing conditions,
and by not overdriving those
conditions. But skids are always
possible.
The three types of skids correspond
to the vehicle's three control
systems. In the braking skid, the
wheels are not rolling. In the
steering or cornering skid, too much
speed or steering in a curve causes

Driving and Operating 9-9
Blizzard Conditions
Being stuck in snow can be in a
serious situation. Stay with the
vehicle unless there is help nearby.
If possible, use theRoadside
Assistance Program
on page 13‑5.
To get help and keep everyone in
the vehicle safe:
.Turn on the hazard warning
flashers.
.Tie a red cloth to an outside
mirror.
{WARNING
Snow can trap engine exhaust
under the vehicle. This may
cause exhaust gases to get
inside. Engine exhaust contains
carbon monoxide (CO) which
cannot be seen or smelled. It can
cause unconsciousness and even
death.
(Continued)
WARNING (Continued)
If the vehicle is stuck in the snow:
.Clear away snow from around
the base of your vehicle,
especially any that is blocking
the exhaust pipe.
.Check again from time to
time to be sure snow does
not collect there.
.Open a window about 5 cm
(two inches) on the side of
the vehicle that is away from
the wind to bring in fresh air.
.Fully open the air outlets on
or under the instrument
panel.
.Adjust the Climate Control
system to a setting that
circulates the air inside the
vehicle and set the fan speed
to the highest setting. See
Climate Control System in the
Index.(Continued)
WARNING (Continued)
For more information about
carbon monoxide, see Engine
Exhaust on page 9‑21.
Snow can trap exhaust gases
under your vehicle. This can
cause deadly CO (carbon
monoxide) gas to get inside. CO
could overcome you and kill you.
You cannot see it or smell it, so
you might not know it is in your
vehicle. Clear away snow from
around the base of your vehicle,
especially any that is blocking the
exhaust.
Run the engine for short periods
only as needed to keep warm, but
be careful.
To save fuel, run the engine for only
short periods as needed to warm
the vehicle and then shut the engine
off and close the window most of
the way to save heat. Repeat this
until help arrives but only when you