2009 GMC ACADIA wheel

Seats and Restraint
System............................... 1-1
Head Restraints
.............. 1-2
Front Seats
.................... 1-3
Rear Seats
...................1-10
Safety Belts
..................1-15
Child Restraints
.............1-29
Airbag System
..............1-48
Restraint System
Check
......................1-61
Features and Controls...... 2-1
Keys
............................. 2-2
Doors and Locks
............ 2-8
Windows
......................2-14
Theft-Deterrent
Systems
...................2-16
Starting and Operating
Your Vehicle
.............2-20
Mirrors
.........................2-31
Object Detection
Systems
...................2-34
OnStar
®System
............2-41Universal Home Remote
System
.....................2-44
Storage Areas
...............2-49
Sunroof
........................2-53
Instrument Panel............... 3-1
Instrument Panel
Overview
.................... 3-4
Climate Controls
............3-22
Warning Lights, Gages,
and Indicators
............3-33
Driver Information
Center (DIC)
.............3-46
Audio System(s)
............3-72
Driving Your Vehicle......... 4-1
Your Driving, the Road,
and the Vehicle
........... 4-1
Towing
........................4-20
Service and
Appearance Care............... 5-1
Service
.......................... 5-3
Fuel
.............................. 5-5
Checking Things Under
the Hood
.................... 5-9All-Wheel Drive
.............5-33
Headlamp Aiming
..........5-33
Bulb Replacement
.........5-33
Windshield Wiper Blade
Replacement
.............5-34
Tires
...........................5-35
Appearance Care
..........5-81
Vehicle Identication
......5-88
Electrical System
...........5-89
Capacities and
Specications
............5-96
Maintenance Schedule...... 6-1
Maintenance Schedule
..... 6-1
Customer Assistance
Information........................ 7-1
Customer Assistance and
Information
................. 7-1
Reporting Safety
Defects
.....................7-14
Vehicle Data Recording
and Privacy
...............7-16
Index....................................i-1
2009 GMC Acadia Owner ManualM

Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. For more
information on the symbol, refer to
the index.
9:Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
g:Audio Steering Wheel
Controls or OnStar®
$:Brake System Warning Light
":Charging System
I:Cruise Control
B:Engine Coolant Temperature
O:Exterior Lamps
#:Fog Lamps
.:Fuel Gage
+:Fuses
i:Headlamp High/Low-Beam
Changer
j:LATCH System Child Restraints
*:Malfunction Indicator Lamp
::Oil Pressure
g:Outside Power Foldaway
Mirrors
}:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
7:Tire Pressure Monitor
_:Tow/Haul Mode
F:Traction Control
M:Windshield Washer Fluid
iv Preface

Why Safety Belts Work
When you ride in or on anything,
you go as fast as it goes.
Take the simplest vehicle. Suppose
it is just a seat on wheels.Put someone on it.
Get it up to speed. Then stop the
vehicle. The rider does not stop.The person keeps going until
stopped by something. In a real
vehicle, it could be the windshield...
or the instrument panel...
1-16 Seats and Restraint System

Airbag System
The vehicle has the following
airbags:
A frontal airbag for the driver.
A frontal airbag for the right front
passenger.
A seat-mounted side impact
airbag for the driver.
A seat-mounted side impact
airbag for the right front
passenger.
A roof-rail airbag for the driver,
passenger seated directly
behind the driver, and the third
row outboard passenger position.
A roof-rail airbag for the right
front passenger, passenger
seated directly behind the right
front passenger, and the third row
outboard passenger position.
All of the airbags in the vehicle will
have the word AIRBAG embossed
in the trim or on an attached
label near the deployment opening.For frontal airbags, the word
AIRBAG will appear on the middle
part of the steering wheel for
the driver and on the instrument
panel for the right front passenger.
With seat-mounted side impact
airbags, the word AIRBAG
will appear on the side of the
seatback closest to the door.
With roof-rail airbags, the word
AIRBAG will appear along the
headliner or trim.
Airbags are designed to supplement
the protection provided by safety
belts. Even though today’s airbags
are also designed to help reduce
the risk of injury from the force of an
inating bag, all airbags must
inate very quickly to do their job.Here are the most important things to
know about the airbag system:
{CAUTION
You can be severely injured or
killed in a crash if you are not
wearing your safety belt — even if
you have airbags. Airbags are
designed to work with safety
belts, but do not replace them.
Also, airbags are not designed to
deploy in every crash. In some
crashes safety belts are your only
restraint. SeeWhen Should an
Airbag Inflate? on page 1-51.
Wearing your safety belt during a
crash helps reduce your chance
of hitting things inside the vehicle
or being ejected from it. Airbags
are “supplemental restraints” to
the safety belts. Everyone in your
vehicle should wear a safety belt
properly — whether or not there is
an airbag for that person.
1-48 Seats and Restraint System

Where Are the Airbags?
The driver frontal airbag is in the
middle of the steering wheel.The right front passenger frontal
airbag is in the instrument panel on
the passenger side.
The seat-mounted side impact
airbags for the driver and right front
passenger are in the side of the
seatbacks closest to the door.
Driver Side shown, Passenger
Side similar
1-50 Seats and Restraint System

The roof-rail airbags for the driver,
right front passenger, passengers
behind the driver and right front
passenger, and the third row
outboard passengers are in the
ceiling above the side windows.
{CAUTION
If something is between an
occupant and an airbag, the
airbag might not inate properly or
it might force the object into that
person causing severe injury or
even death. The path of an
inating airbag must be kept
clear. Do not put anything
between an occupant and an
airbag, and do not attach or put
anything on the steering wheel
hub or on or near any other
airbag covering.
Do not use seat accessories that
block the ination path of a
seat-mounted side impact airbag.
(Continued)
CAUTION (Continued)
Never secure anything to the roof
of a vehicle with roof-rail airbags
by routing a rope or tie down
through any door or window
opening. If you do, the path of an
inating roof-rail airbag will be
blocked.
When Should an Airbag
Inate?
Frontal airbags are designed to
inate in moderate to severe frontal
or near-frontal crashes to help
reduce the potential for severe
injuries mainly to the driver’s or right
front passenger’s head and chest. Driver Side shown, Passenger
Side similar
Seats and Restraint System 1-51

Roof-rail airbags are not intended
to inate in rear impacts. A
seat-mounted side impact airbag
is intended to deploy on the side
of the vehicle that is struck. Both
roof-rail airbags will deploy when
either side of the vehicle is struck, or
if the sensing system predicts that
the vehicle is about to roll over, or in
a severe frontal impact.
In any particular crash, no one can
say whether an airbag should
have inated simply because of the
damage to a vehicle or because
of what the repair costs were.
For frontal airbags, ination is
determined by what the vehicle hits,
the angle of the impact, and how
quickly the vehicle slows down. For
seat-mounted side impact and
roof-rail airbags, deployment
is determined by the location and
severity of the side impact. In
a rollover event, roof-rail airbag
deployment is determined by
the direction of the roll.What Makes an Airbag
Inate?
In a deployment event, the sensing
system sends an electrical signal
triggering a release of gas from the
inator. Gas from the inator lls
the airbag causing the bag to break
out of the cover and deploy. The
inator, the airbag, and related
hardware are all part of the airbag
module.
Frontal airbag modules are located
inside the steering wheel and
instrument panel. For vehicles with
seat-mounted side impact airbags,
there are airbag modules in the side
of the front seatbacks closest to
the door. For vehicles with roof-rail
airbags, there are airbag modules
in the ceiling of the vehicle, near the
side windows that have occupant
seating positions.
How Does an Airbag
Restrain?
In moderate to severe frontal or
near frontal collisions, even belted
occupants can contact the steering
wheel or the instrument panel.
In moderate to severe side
collisions, even belted occupants
can contact the inside of the vehicle.
Airbags supplement the protection
provided by safety belts.
Frontal airbags distribute the force
of the impact more evenly over
the occupant’s upper body, stopping
the occupant more gradually.
Seat-mounted side impact and
roof-rail airbags distribute the force
of the impact more evenly over
the occupant’s upper body.
Seats and Restraint System 1-53

Adding Equipment to
Your Airbag-Equipped
Vehicle
Q:Is there anything I might add
to or change about the
vehicle that could keep the
airbags from working
properly?
A:Yes. If you add things that
change the vehicle’s frame,
bumper system, height, front end
or side sheet metal, they may
keep the airbag system from
working properly. Changing or
moving any parts of the front
seats, safety belts, the airbag
sensing and diagnostic module,
steering wheel, instrument panel,
roof-rail airbag modules, ceiling
headliner or pillar garnish trim,
front sensors, side impact
sensors, rollover sensor module,
or airbag wiring can affect the
operation of the airbag system.In addition, the vehicle has a
passenger sensing system for the
right front passenger position,
which includes sensors that are
part of the passenger seat. The
passenger sensing system may
not operate properly if the original
seat trim is replaced with non-GM
covers, upholstery or trim, or with
GM covers, upholstery or trim
designed for a different vehicle.
Any object, such as an
aftermarket seat heater or a
comfort enhancing pad or device,
installed under or on top of the
seat fabric, could also interfere
with the operation of the
passenger sensing system.
This could either prevent proper
deployment of the passenger
airbag(s) or prevent the
passenger sensing system from
properly turning off the passenger
airbag(s). SeePassenger
Sensing System on page 1-55.If you have questions, call
Customer Assistance. The phone
numbers and addresses for
Customer Assistance are in Step
Two of the Customer Satisfaction
Procedure in this manual. See
Customer Satisfaction Procedure
on page 7-1.
If the vehicle has rollover
roof-rail airbags, seeDifferent
Size Tires and Wheels on
page 5-50for additional
important information.
1-60 Seats and Restraint System