2009 GMC ACADIA climate control

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.
REAR:Press to turn the rear
heating and air conditioning on or
off. SeeRear Air Conditioning
and Heating System on page 3-31
orRear Air Conditioning and
Heating System and Electronic
Climate Controls on page 3-32.Sensors
The solar sensor, located in the
defrost grille in the middle of
the instrument panel, monitors the
solar heat. Do not cover the
solar sensor or the system will not
work properly.The interior temperature sensor
located on the instrument panel to
the right of the steering column,
measures the temperature of the air
inside the vehicle.
There is also an exterior temperature
sensor located behind the front grille.
This sensor reads the outside air
temperature and helps maintain the
temperature inside the vehicle. Any
cover on the front of the vehicle
could cause a false reading in the
displayed temperature.
The climate control system uses the
information from these sensors to
maintain comfort settings by
Instrument Panel 3-29

Rear Air Conditioning and Heating System
A. Fan Control
B. Temperature Control
C. Air Delivery Mode Control
For vehicles with the rear climate
control system, the controls are
located on the rear of the center
console. The system can also
be controlled with the front controls.
Press the REAR button on the
front climate control system to turn
the rear climate control system
on or off.An indicator comes on when the
rear system is on. The system also
turns on if any of the rear controls
are adjusted.
Mimic Mode:
This mode matches
the rear climate control to the front
climate control settings. It comes on
when REAR is pressed.
Independent Mode: This mode
directs rear seating airow according
to the settings of the rear controls.
It comes on when any rear
control is adjusted. Fan Control:
Turn clockwise or
counterclockwise to increase
or decrease the fan speed.
Turn the knob to
9to turn the
fan off.
Temperature Control: Turn
clockwise or counterclockwise to
increase or decrease the airow
temperature.
Air Delivery Mode Control:
Turn to the desired mode to change
the airow direction.
H(Vent): Air is directed through
the overhead outlets.
)(Bi-Level): Air is directed
through the rear oor outlets, as
well as the overhead outlets.
6(Floor): Air is directed through
the oor outlets. The rear system
oor outlets are located under
the third row seats.
Instrument Panel 3-31

Rear Air Conditioning and Heating System and
Electronic Climate Controls
A. Fan Control
B. Air Delivery Mode Control
C. Temperature Control
For vehicles with the rear climate
control system, the controls are
located on the rear of the center
console.Press the REAR button on the front
climate control system to turn the
rear climate control system on or off.
The system also turns on if any of
the rear controls, except for the
Care pressed. An indicator comes
on when the rear system is on.
The system can also be turned off,
by pressing and holding the
Cbutton. Mimic Mode:
This mode matches
the rear climate control to the
front climate control settings.
It comes on when REAR is pressed.
Independent Mode: This mode
directs rear seating airow according
to the settings of the rear controls.
It comes on when any rear control
is adjusted.
DC(Fan Control): Press the fan
up or down buttons to increase
or decrease the fan speed.
Temperature Control: Press
+or− to increase or decrease
the air temperature. The
temperature settings will display in
0-12 increments, going from the
coolest (0) to the warmest (12)
setting.
N(Air Delivery Mode Control):
Press to manually change the
direction of the airow. Repeatedly
press the button until the desired
mode appears on the display.
Rear Climate Control with Rear Seat Audio Controls
3-32 Instrument Panel

2. Find the vehicle’s current
location and variance zone
number on the map.
Zones 1 through 15 are available.
3. Press the set/reset button
to scroll through and select the
appropriate variance zone.
4. Press the trip/fuel button until the
vehicle heading, for example,
N for North, is displayed in
the DIC.
5. If calibration is necessary,
calibrate the compass.
See “Compass Calibration
Procedure” following.
Compass Calibration
The compass can be manually
calibrated. Only calibrate the
compass in a magnetically clean
and safe location, such as an open
parking lot, where driving the
vehicle in circles is not a danger.
It is suggested to calibrate away
from tall buildings, utility wires,
manhole covers, or other industrial
structures, if possible.If CAL should ever appear in the
DIC display, the compass should be
calibrated.
If the DIC display does not show a
heading, for example, N for North,
or the heading does not change
after making turns, there may be a
strong magnetic eld interfering
with the compass. Such interference
may be caused by a magnetic CB
or cell phone antenna mount, a
magnetic emergency light, magnetic
note pad holder, or any other
magnetic item. Turn off the vehicle,
move the magnetic item, then
turn on the vehicle and calibrate the
compass.
To calibrate the compass, use the
following procedure:
Compass Calibration Procedure
1. Before calibrating the compass,
make sure the compass zone is
set to the variance zone in
which the vehicle is located.
See “Compass Variance (Zone)
Procedure” earlier in this section.Do not operate any switches
such as window, sunroof, climate
controls, seats, etc. during the
calibration procedure.
2. Press the vehicle information
button until PRESS
VTO
CALIBRATE COMPASS
displays.
3. Press the set/reset button to start
the compass calibration.
4. The DIC will display
CALIBRATING: DRIVE IN
CIRCLES. Drive the vehicle in
tight circles at less than
5 mph (8 km/h) to complete the
calibration. The DIC will
display CALIBRATION
COMPLETE for a few seconds
when the calibration is complete.
The DIC display will then
return to the previous menu.
Instrument Panel 3-55

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.
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/retailer
if you notice a drop in heating and
air conditioning efficiency.
SERVICE AIR BAG
This message displays if there is a
problem with the airbag system.
Have your dealer/retailer inspect the
system for problems. SeeAirbagReadiness Light on page 3-36and
Airbag System on page 1-48for
more information.
SERVICE ALL WHEEL DRIVE
If your vehicle has the All-Wheel
Drive (AWD) system, this message
displays if there is a problem
with this system. If this message
appears, stop as soon as possible
and turn off the vehicle. Restart
the vehicle after 30 seconds
and check for the message on the
DIC display. If the message is
still displayed or appears again
when you begin driving, the AWD
system needs service. See your
dealer/retailer.
SERVICE BATTERY
CHARGING SYSTEM
On some vehicles, this message
displays if there is a problem
with the battery charging system.
Under certain conditions, the
charging system light may also turn
on in the instrument panel cluster.
SeeCharging System Light onpage 3-37. Driving with this problem
could drain the battery. Turn off
all unnecessary accessories.
Have the electrical system checked
as soon as possible. See your
dealer/retailer.
SERVICE BRAKE SYSTEM
This message displays along with
the brake system warning light
if there is a problem with the brake
system. SeeBrake System
Warning Light on page 3-38. If this
message appears, stop as soon
as possible and turn off the vehicle.
Restart the vehicle and check for
the message on the DIC display.
If the message is still displayed or
appears again when you begin
driving, the brake system needs
service as soon as possible.
See your dealer/retailer.
SERVICE PARK ASSIST
If your vehicle has the Ultrasonic
Rear Parking Assist (URPA) system,
this message displays if there is a
problem with the URPA system.
Instrument Panel 3-61

If the system fails to turn on or
activate, the StabiliTrak light along
with one of the following messages
will be displayed on the Driver
Information Center (DIC):
TRACTION CONTROL OFF,
SERVICE TRACTION CONTROL,
SERVICE STABILITRAK. If these
conditions are observed, turn the
vehicle off, wait 15 seconds, and
then turn it back on again to reset the
system. If any of these messages still
appear on the Driver Information
Center (DIC), the vehicle should be
taken in for service. For more
information on the DIC messages,
seeDriver Information Center (DIC)
on page 3-46.
The StabiliTrak light will ash on the
instrument panel cluster when the
system is both on and activated.
The system may be heard or
felt while it is working; this is normal.The traction control disable button
is located on the instrument
panel below the climate controls.
The traction control part of
StabiliTrak can be turned off by
pressing and releasing the traction
control disable button.
Traction control can be turned on
by pressing and releasing the
traction control disable button if
not automatically shut off for any
other reason.
When the traction control system is
turned off, the StabiliTrak light and
the appropriate traction control off
message will be displayed on the
DIC to warn the driver. The vehicle
will still have brake-traction control
when traction control is off, but will
not be able to use the engine speed
management system. See “Traction
Control Operation” next for more
information.When the traction control system
has been turned off, system noises
may be heard and felt as a result
of the brake-traction control working.
It is recommended to leave the
system on for normal driving
conditions, but it may be necessary
to turn the system off if the
vehicle is stuck in sand, mud, ice or
snow, and you want to “rock” the
vehicle to attempt to free it. It
may also be necessary to turn off
the system when driving in extreme
off-road conditions where high
wheel spin is required. SeeIf Your
Vehicle is Stuck in Sand, Mud,
Ice, or Snow on page 4-15.
Traction Control Operation
The traction control system is part
of the StabiliTrak system. Traction
control limits wheel spin by reducing
engine power to the wheels
(engine speed management) and
by applying brakes to each
individual wheel (brake-traction
control) as necessary.
4-6 Driving Your Vehicle

The surface of a curve or an
overpass can remain icy when the
surrounding roads are clear.
Avoid sudden steering maneuvers
and braking while on ice.
Turn off cruise control, if equipped,
on slippery surfaces.
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 7-6.
To get help and keep everyone
in the vehicle safe:
Turn on theHazard Warning
Flashers on page 3-5.
Tie a red cloth to an outside
mirror.
{CAUTION
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.
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 two
inches (5 cm) 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.
(Continued)
CAUTION (Continued)
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.
For more information about
carbon monoxide, seeEngine
Exhaust on page 2-30.
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.
4-14 Driving Your Vehicle

Basic Trailer Wiring
The trailer wiring harness, with a
seven-pin connector, is located
at the rear of the vehicle and is
tied to the vehicle’s frame.
The harness connector can be
plugged into a seven-pin universal
heavy-duty trailer connector
available through your
dealer/retailer.
The seven-wire harness contains
the following trailer circuits:
Yellow: Left Stop/Turn Signal
Dark Green: Right Stop/Turn
Signal
Brown: Taillamps
Black: Ground
Light Green: Back-up Lamps
Red/Black: Battery Feed
Dark Blue: Trailer Brake*
*The fuse for this circuit is installed
in the underhood electrical center,
but the wires are not connected.
They should be connected by your
dealer/retailer or a qualied
service center.
If the back-up lamp circuit is not
functional, contact your
dealer/retailer.If a remote (non-vehicle) battery is
being charged, press the Tow/Haul
mode switch located on the center
console near the climate controls.
This will boost the vehicle system
voltage and properly charge the
battery. If the trailer is too light for
Tow/Haul mode, turn on the
headlamps (Non-HID only) as a
second way to boost the vehicle
system and charge the battery.
Engine Cooling When Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. SeeEngine Overheating
on page 5-21.
Driving Your Vehicle 4-33