2011 GMC ACADIA air condition

Black plate (18,1)GMC Acadia/Acadia Denali Owner Manual - 2011
5-18 Instruments and Controls
Malfunction
Indicator Lamp
A computer system called OBD II
(On-Board Diagnostics-Second
Generation) monitors operation
of the fuel, ignition, and emission
control systems. It ensures that
emissions are at acceptable levels
for the life of the vehicle, helping to
produce a cleaner environment.
This light should come on when the
ignition is on, but the engine is not
running, as a check to show it is
working. If it does not, have the
vehicle serviced by your dealer.If the malfunction indicator lamp
comes on and stays on while the
engine is running, this indicates that
there is an OBD II problem and
service is required.
Malfunctions often are indicated by
the system before any problem is
apparent. Being aware of the light
can prevent more serious damage
to the vehicle. This system assists
the service technician in correctly
diagnosing any malfunction.
Notice:
If the vehicle is
continually driven with this light
on, after a while, the emission
controls might not work as well,
the vehicle fuel economy might
not be as good, and the engine
might not run as smoothly.
This could lead to costly repairs
that might not be covered by
the vehicle warranty. Notice:
Modifications made
to the engine, transmission,
exhaust, intake, or fuel system
of the vehicle or the replacement
of the original tires with other
than those of the same Tire
Performance Criteria (TPC)
can affect the vehicle's emission
controls and can cause this
light to come on. Modifications
to these systems could lead to
costly repairs not covered by
the vehicle warranty. This could
also result in a failure to
pass a required Emission
Inspection/Maintenance
test. See Accessories and
Modifications on page 10‑3.
This light comes on during a
malfunction in one of two ways:
Light Flashing: A misfire condition
has been detected. A misfire
increases vehicle emissions and
could damage the emission control
system on the vehicle. Diagnosis
and service might be required.

Black plate (27,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Instruments and Controls 5-27
UNITS
Press the vehicle information button
until UNITS displays. This display
allows you to select between Metric
or English units of measurement.
Once in this display, press the
set/reset button to select between
METRIC or ENGLISH units. All of
the vehicle information will then
be displayed in the unit of
measurement selected.
FRONT TIRES or REAR TIRES
On vehicles with the Tire Pressure
Monitor System (TPMS), the
pressure for each tire can be
viewed in the DIC. The tire
pressure will be shown in either
kilopascals (kPa) or pounds per
square inch (psi). Press the vehicle
information button until the DIC
displays FRONT TIRES kPa (PSI)
LEFT ## RIGHT ##. Press the
vehicle information button again
until the DIC displays REAR
TIRES kPa (PSI) LEFT ##
RIGHT ##.If a low tire pressure condition
is detected by the system while
driving, a message advising you
add air to a specific tire will appear
in the display. See
Tire Pressure on
page 10‑45 andTire Messages on
page 5‑44 for more information.
If the tire pressure display shows
dashes instead of a value, there
may be a problem with your vehicle.
If this consistently occurs, see your
dealer for service.
COMPASS ZONE SETTING
This display will be available
if the vehicle has a compass.
See Compass on page 5‑6 for
more information.
COMPASS RECALIBRATION
This display will be available
if the vehicle has a compass.
See Compass on page 5‑6 for
more information. Blank Display
This display shows no information.
Trip/Fuel Menu Items
3(Trip/Fuel):
Press this button
to scroll through the following menu
items:
ODOMETER
Press the trip/fuel button until
ODOMETER displays. This display
shows the distance the vehicle has
been driven in either kilometers (km)
or miles (mi). Pressing the trip
odometer reset stem will also
display the odometer.
To switch between English and
metric measurements, see “UNITS”
earlier in this section.

Black plate (39,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Instruments and Controls 5-39
PASSENGER DOOR OPEN
This message displays and a chime
sounds if the passenger door is
not fully closed and the vehicle is
shifted out of P (Park). Stop and turn
off the vehicle, check the door for
obstructions, and close the door
again. Check to see if the message
still appears on the DIC.
POWER LIFTGATE OFF
This message displays when the
power liftgate has been turned off
by pressing the power liftgate button
on the center console.
RIGHT REAR DOOR OPEN
This message displays and a chime
sounds if the passenger side rear
door is not fully closed and the
vehicle is shifted out of P (Park).
Stop and turn off the vehicle, check
the door for obstructions, and close
the door again. Check to see if the
message still appears on the DIC.
Engine Cooling System
Messages
ENGINE HOT A/C
(Air Conditioning) OFF
This message displays when the
engine coolant becomes hotter than
the normal operating temperature.
SeeEngine Coolant Temperature
Gauge on page 5‑14. To avoid
added strain on a hot engine,
the air conditioning compressor
automatically turns off. When
the coolant temperature returns
to normal, the air conditioning
compressor turns back on.
You can continue to drive
your vehicle.
If this message continues to appear,
have the system repaired by your
dealer as soon as possible to avoid
damage to the engine.
ENGINE OVERHEATED IDLE
ENGINE
Notice: If you drive the vehicle
while the engine is overheating,
severe engine damage may
occur. If an overheat warning
appears on the instrument panel
cluster and/or DIC, stop the
vehicle as soon as possible.
Do not increase the engine
speed above normal idling speed.
See Engine Overheating on
page 10‑19 for more information.
This message displays when the
engine coolant temperature is too
hot. Stop and allow the vehicle to
idle until it cools down. See Engine
Coolant Temperature Gauge on
page 5‑14.
See Overheated Engine Protection
Operating Mode on page 10‑22 for
information on driving to a safe
place in an emergency.

Black plate (43,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Instruments and Controls 5-43
SERVICE TRACTION
CONTROL
This message displays when there
is a problem with the Traction
Control System (TCS). When this
message is displayed, the system
will not limit wheel spin. Adjust your
driving accordingly. See your dealer
for service. SeeStabiliTrak
®System
on page 9‑31 for more information.
TRACTION CONTROL OFF
This message displays when the
Traction Control System (TCS)
is turned off. Adjust your driving
accordingly. See StabiliTrak
®
System on page 9‑31 for more
information. This message clears
itself after 10 seconds.
TRACTION CONTROL ON
This message displays when the
Traction Control System (TCS) is
turned on. See StabiliTrak
®System
on page 9‑31 for more information.
This message clears itself after
10 seconds.
Airbag System Messages
SERVICE AIR BAG
This message displays if there is a
problem with the airbag system.
Have your dealer inspect the
system for problems. See Airbag
Readiness Light on page 5‑15 and
Airbag System on page 3‑33 for
more information.
Anti-Theft Alarm System
Messages
SERVICE THEFT DETERRENT
SYSTEM
This message displays when there
is a problem with the theft-deterrent
system. The vehicle may or may not
restart so you may want to take the
vehicle to your dealer before turning
off the engine. See Immobilizer
Operation on page 2‑15 for more
information.
THEFT ATTEMPTED
This message displays if the
content theft-deterrent system has
detected a break-in attempt while
you were away from your vehicle.
See Anti-Theft Alarm System on
page 2‑13 for more information.
Service Vehicle Messages
SERVICE A/C
(Air Conditioning)
SYSTEM
This message displays when the
electronic sensors that control
the air conditioning and heating
systems are no longer working.
Have the climate control system
serviced by your dealer if you
notice a drop in heating and air
conditioning efficiency.

Black plate (46,1)GMC Acadia/Acadia Denali Owner Manual - 2011
5-46 Instruments and Controls
SERVICE TRANSMISSION
This message displays when there
is a problem with the transmission.
See your dealer for service.
TRANSMISSION HOT IDLE
ENGINE
Notice:If you drive the vehicle
while the transmission fluid is
overheating and the transmission
temperature warning is displayed
on the instrument panel cluster
and/or DIC, you can damage the
transmission. This could lead to
costly repairs that would not be
covered by the warranty. Do not
drive the vehicle with overheated
transmission fluid or while the
transmission temperature
warning is displayed. This message displays and a chime
sounds if the transmission fluid in
the vehicle gets hot. Driving with the
transmission fluid temperature high
can cause damage to the vehicle.
Stop the vehicle and let it idle to
allow the transmission to cool.
This message clears when the fluid
temperature reaches a safe level.
Vehicle Reminder
Messages
ICE POSSIBLE DRIVE
WITH CARE
This message displays when
the outside air temperature is
cold enough to create icy road
conditions. Adjust your driving
accordingly.
Vehicle Speed Messages
SPEED LIMITED TO
XXX MPH (KM/H)
This message displays when
your vehicle speed is limited to
128 km/h (80 mph) because the
vehicle detects a problem in the
speed variable assist steering
system. Have your vehicle serviced
by your dealer.
Washer Fluid Messages
WASHER FLUID LOW ADD
FLUID
This message displays when the
windshield washer fluid is low.
Fill the windshield washer fluid
reservoir as soon as possible.
See
Engine Compartment Overview
on page 10‑6 for the location
of the windshield washer fluid
reservoir. Also, see Washer
Fluid on page 10‑23 for more
information.

Black plate (1,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Climate Controls 8-1
Climate Controls
Climate Control Systems
Climate Control Systems . . . . . . 8-1
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . 8-4
Rear Climate Control System (Rear Climate
Control Only) . . . . . . . . . . . . . . . 8-10
Rear Climate Control System (Rear Climate with
Rear Seat Audio) . . . . . . . . . . . 8-11
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . 8-12
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . 8-13
Climate Control Systems
The heating, cooling, and ventilation in the vehicle can be controlled with
this system.
A. Fan Control
B. Temperature Control
C. Air Delivery Mode Control
D. Air Conditioning
E. REAR (Rear Climate Control)
F. Recirculation
G. Rear Window Defogger9(Off): Turn the fan control all the
way counterclockwise to turn the
front climate control system off.
9(Fan Control): Turn clockwise
or counterclockwise to increase or
decrease the fan speed.

Black plate (2,1)GMC Acadia/Acadia Denali Owner Manual - 2011
8-2 Climate Controls
Temperature Control:Turn
clockwise or counterclockwise
to increase or decrease the
temperature of the air flowing
from the system.
Air Delivery Mode Control: Turn
clockwise or counterclockwise to
change the current airflow mode.
By positioning the right knob
between two modes, a combination
of those two modes is selected.
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
automatically selects outside air.
Recirculation cannot be selected
while in floor mode.
-(Defog): This 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 unless
the outside temperature is less than
4°C (40°F). Recirculation cannot be
selected while in the defog mode.
Do not drive the vehicle until all
the windows are clear.
0(Defrost): This clears the
windshield of fog or frost, more
quickly. Air is directed to the
windshield and side window vents,
with some to the floor vents. In this
mode, outside air is pulled inside
the vehicle. Recirculation cannot be
selected while in the defrost mode.
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.
#(Air Conditioning): Press to
turn the air conditioning system on
or off. An indicator light comes on
when A/C is on. The air conditioning
system does not operate when
the outside temperature is below
4°C (40°F). The indicator light
flashes three times and turns off
when outside conditions affect air
conditioning operation. This is
normal.

Black plate (3,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Climate Controls 8-3
For quicker cool down on hot days:
1. Open the windows to let hot airescape.
2. Select
Hmode.
3. Select
#.
4. Select the coolest temperature.
5. Select the highest fan speed.
6. Close the windows after the hot air has escaped.
7. Once the vehicle's interior temperature is below the outside
temperature, select
@mode
for faster cooling.
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 8‑10 orRear Climate Control
System (Rear Climate with Rear
Seat Audio) on page 8‑11.
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.