2012 GMC ACADIA air conditioning

Black plate (4,1)GMC Acadia/Acadia Denali Owner Manual - 2012
8-4 Climate Controls
Do not drive the vehicle until all
windows are clear.
For vehicles with heated outside
rearview mirrors, fog or frost is
cleared from the surface of the
mirror when
1is pressed.
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.
Dual Automatic Climate Control System
The heating, cooling, and ventilation in the vehicle can be controlled with
this system.
A. Fan Control
B. AUTO (Automatic Operation)
C. Defrost
D. Recirculation
E. REAR (Rear Climate Control)
F. Air Delivery Mode Control
G. Driver Side Temperature Control H. Display
I. Power (On/Off)
J. Rear Window Defogger
K. Air Conditioning
L. PASS (Passenger)
M. Passenger Side Temperature
Control

Black plate (5,1)GMC Acadia/Acadia Denali Owner Manual - 2012
Climate Controls 8-5
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.
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 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.

Black plate (7,1)GMC Acadia/Acadia Denali Owner Manual - 2012
Climate Controls 8-7
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 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.

Black plate (8,1)GMC Acadia/Acadia Denali Owner Manual - 2012
8-8 Climate Controls
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 8‑10 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.
1(Rear Window Defogger):
Press to turn the rear window
defogger on or off. The rear window
defogger stays on for about
10 minutes, before turning off.
The defogger also turns 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 the rear window defog
button is pressed.
Notice: Do not use a razor blade
or sharp object to clear the inside
rear window. Do not adhere
anything to the defogger grid
lines in the rear glass. These
actions may damage the rear
defogger. Repairs would not be
covered by your warranty.

Black plate (20,1)GMC Acadia/Acadia Denali Owner Manual - 2012
10-20 Vehicle Care
If the overheat warning is displayed
with no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the highesttemperature and to the highest
fan speed. Open the windows as
necessary.
3. If in a traffic jam, shift to N (Neutral); otherwise,
shift to the highest gear while
driving —D (Drive) or L (Low).
If the temperature overheat gauge
is no longer in the overheat zone or
an overheat warning no longer
displays, the vehicle can be driven.
Continue to drive the vehicle slow
for about 10 minutes. Keep a safe
vehicle distance from the car in front
of you. If the warning does not come
back on, continue to drive normally.
If the warning continues, pull over,
stop, and park the vehicle
right away. If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down. Also, see
“Overheated
Engine Protection Operating Mode”
next in this section.
Overheated Engine
Protection
Operating Mode
This emergency operating mode lets
the vehicle be driven to a safe place
in an emergency situation. If an
overheated engine condition exists,
an overheat protection mode which
alternates firing groups of cylinders
helps prevent engine damage. In this mode, there is a significant
loss in power and engine
performance. The temperature
gauge indicates an overheat
condition exists. Driving extended
distances and/or towing a trailer in
the overheat protection mode
should be avoided.
Notice:
After driving in the
overheated engine protection
operating mode, to avoid engine
damage, allow the engine to cool
before attempting any repair.
The engine oil will be severely
degraded. Repair the cause of
coolant loss, change the oil
and reset the oil life system.
See Engine Oil on page 10‑8.

Black plate (32,1)GMC Acadia/Acadia Denali Owner Manual - 2012
10-32 Vehicle Care
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
A/C CLTCH Air Conditioning
Clutch
ABS MTR Antilock Brake
System (ABS)
Motor
AFS Adaptive Forward
Lighting System
AIRBAG Airbag System
AUX POWER Auxiliary Power
AUX
VAC PUMP Auxiliary
Vacuum Pump
AWD All-Wheel-Drive
System
BATT 1 Battery 1
BATT 2 Battery 2
BATT 3 Battery 3 CIGAR
LIGHTER Cigarette Lighter
ECM Engine Control
Module

Black plate (33,1)GMC Acadia/Acadia Denali Owner Manual - 2012
Vehicle Care 10-33
FusesUsage
ECM 1 Engine Control
Module 1
EMISSION 1 Emission 1
EMISSION 2 Emission 2
EVEN COILS Even Injector Coils
FAN 1 Cooling Fan 1
FAN 2 Cooling Fan 2
FOG LAMP Fog Lamps
FSCM Fuel System
Control Module
HORN Horn
HTD MIR Heated Outside
Rearview Mirror
HUMIDITY/ MAF Humidity Sensor/
MAF Sensor
HVAC BLWR Heating,
Ventilation, and
Air Conditioning
Blower Fuses
Usage
LT HI BEAM Left High-Beam
Headlamp
LT LO BEAM Left Low‐Beam
Headlamp
LT PRK Left Parking Lamp
LT TRLR
STOP/TRN Trailer Left
Stoplamp and
Turn Signal
ODD COILS Odd Injector Coils
PCM IGN Powertrain Control
Module Ignition
PWR L/GATE Power Liftgate PWR
OUTLET Power Outlet
REAR
CAMERA Rear Vision
Camera
RR APO Rear Accessory
Power Outlet
RR DEFOG Rear Defogger Fuses
Usage
RR HVAC Rear Climate
Control System
RT HI BEAM Right High‐Beam
Headlamp
RT LO BEAM Right Low‐Beam
Headlamp
RT PRK Right
Parking Lamp
RT TRLR
STOP/TRN Trailer Right
Stoplamp and
Turn Signal
RVC SNSR Regulated Voltage
Control Sensor
S/ROOF/
SUNSHADE Sunroof
SERVICE Service Repair SPARE SpareSTOP
LAMPS
(China Only) Stoplamps
(China Only)

Black plate (34,1)GMC Acadia/Acadia Denali Owner Manual - 2012
10-34 Vehicle Care
FusesUsage
STRTR Starter
TCM Transmission
Control Module
TRANS Transmission TRLR
BCK/UP Trailer Back‐up
Lamps
TRLR BRK Trailer Brake TRLR
PRK LAMP Trailer Parking
Lamps
TRLR PWR Trailer Power
WPR/WSW Windshield
Wiper/Washer
Relays Usage
A/C
CMPRSR CLTCH Air Conditioning
Compressor Clutch
AUX
VAC PUMP Auxiliary
Vacuum Pump
CRNK Switched Power Relays
Usage
FAN 1 Cooling Fan 1
FAN 2 Cooling Fan 2
FAN 3 Cooling Fan 3
FOG LAMP Fog Lamps
HI BEAM High‐Beam
Headlamps
HID/LO BEAM High Intensity
Discharge (HID)
Low‐Beam
Headlamps
HORN Horn IGN Ignition Main
LT TRLR
STOP/TRN Trailer Left
Stoplamp and
Turn Signal Lamp
PRK LAMP Parking Lamp
PWR/TRN Powertrain
RR DEFOG Rear Window
Defogger Relays
Usage
RT TRLR
STOP/TRN Trailer Right
Stoplamp and
Turn Signal Lamp
Stop Lamps
(China Only) Stop Lamps
(China Only)
TRLR
BCK/UP Trailer Back-up
Lamps
WPR Windshield Wiper
WPR HI Windshield Wiper
High Speed
Instrument Panel Fuse
Block
The instrument panel fuse block
is located under the instrument
panel on the passenger side of the
vehicle. Pull down on the cover to
access the fuse block.