2009 GMC ACADIA ECU
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Do not secure a child seat in a
position without a top tether anchor
if a national or local law requires
that the top tether be anchored, or if
the instructions that come with
the child restraint say that the top
strap must be anchored.
In Canada, the law requires that
forward-facing child restraints have
a top tether, and that the tether
be attached.You will be using the lap-shoulder
belt to secure the child restraint
in this position. Follow the
instructions that came with
the child restraint.
1. Move the seat as far back as it
will go before securing the
forward-facing child restraint.
When the passenger sensing
system has turned off the
right front passenger frontal
airbag and seat-mounted side
impact airbag, the off indicator on
the passenger airbag status
indicator should light and stay lit
when the vehicle is started.
SeePassenger Airbag Status
Indicator on page 3-36.
2. Put the child restraint on
the seat.3. Pick up the latch plate, and run
the lap and shoulder portions of
the vehicle’s safety belt
through or around the restraint.
The child restraint instructions
will show you how.
4. Push the latch plate into the
buckle until it clicks.
Position the release button on
the buckle so that the safety belt
could be quickly unbuckled if
necessary.
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5. Pull the rest of the shoulder belt
all the way out of the retractor to
set the lock.6. To tighten the belt, push down
on the child restraint, pull the
shoulder portion of the belt
to tighten the lap portion of the
belt and feed the shoulder
belt back into the retractor. When
installing a forward-facing child
restraint, it may be helpful to use
your knee to push down on
the child restraint as you tighten
the belt.
7. Push and pull the child restraint
in different directions to be sure
it is secure.If the airbags are off, the off
indicator in the passenger airbag
status indicator will come on
and stay on when the vehicle is
started.
If a child restraint has been installed
and the on indicator is lit, see “If
the On Indicator is Lit for a
Child Restraint” underPassenger
Sensing System on page 1-55
for more information.
To remove the child restraint,
unbuckle the vehicle safety belt and
let it return to the stowed position.
Seats and Restraint System 1-47
Page 53 of 420
{CAUTION
Airbags in ate with great force,
faster than the blink of an eye.
Anyone who is up against, or very
close to, any airbag when it
in ates can be seriously injured or
killed. Do not sit unnecessarily
close to the airbag, as you would
be if you were sitting on the edge
of your seat or leaning forward.
Safety belts help keep you in
position before and during a
crash. Always wear your safety
belt, even with airbags. The driver
should sit as far back as possible
while still maintaining control of
the vehicle.
Occupants should not lean on or
sleep against the door or side
windows in seating positions with
seat-mounted side impact airbags
and/or roof-rail airbags.
{CAUTION
Children who are up against, or
very close to, any airbag when it
in ates can be seriously injured or
killed. Airbags plus lap-shoulder
belts offer protection for adults
and older children, but not for
young children and infants.
Neither the vehicle’s safety belt
system nor its airbag system is
designed for them. Young children
and infants need the protection
that a child restraint system can
provide. Always secure children
properly in your vehicle. To read
how, seeOlder Children on
page 1-29orInfants and Young
Children on page 1-31.There is an airbag readiness light
on the instrument panel cluster,
which shows the airbag symbol.
The system checks the airbag
electrical system for malfunctions.
The light tells you if there is an
electrical problem. SeeAirbag
Readiness Light on page 3-36for
more information.
Seats and Restraint System 1-49
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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 in ate properly or
it might force the object into that
person causing severe injury or
even death. The path of an
in ating 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 in ation 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
in ating roof-rail airbag will be
blocked.
When Should an Airbag
In ate?
Frontal airbags are designed to
in ate 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
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According to accident statistics,
children are safer when properly
secured in a rear seat in the
correct child restraint for their
weight and size.
We recommend that children be
secured in a rear seat, including:
an infant or a child riding in a
rear-facing child restraint; a child
riding in a forward-facing child seat;
an older child riding in a booster
seat; and children, who are
large enough, using safety belts.
A label on the sun visor says,
“Never put a rear-facing child seat
in the front.” This is because the risk
to the rear-facing child is so great,
if the airbag deploys.{CAUTION
A child in a rear-facing child
restraint can be seriously injured or
killed if the right front passenger
airbag in ates. This is because the
back of the rear-facing child
restraint would be very close to the
in ating airbag. A child in a
forward-facing child restraint can
be seriously injured or killed if the
right front passenger airbag
in ates and the passenger seat is
in a forward position.
Even if the passenger sensing
system has turned off the right
front passenger frontal airbag, no
system is fail-safe. No one can
guarantee that an airbag will not
deploy under some unusual
circumstance, even though the
airbag is turned off.
(Continued)
CAUTION (Continued)
Secure rear-facing child restraints
in a rear seat, even if the airbag is
off. If you secure a forward-facing
child restraint in the right front seat,
always move the front passenger
seat as far back as it will go. It is
better to secure the child restraint
in a rear seat.
The passenger sensing system
is designed to turn off the right front
passenger frontal airbag if:
The right front passenger seat is
unoccupied.
The system determines that an
infant is present in a child
restraint.
A right front passenger takes
his/her weight off of the seat
for a period of time.
Or, if there is a critical problem
with the airbag system or the
passenger sensing system.
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When the passenger sensing
system has turned off the right front
passenger frontal airbag, the off
indicator will light and stay lit
to remind you that the airbag is off.
SeePassenger Airbag Status
Indicator on page 3-36.
The passenger sensing system is
designed to turn on (may in ate) the
right front passenger frontal airbag
anytime the system senses that a
person of adult size is sitting properly
in the right front passenger seat.
When the passenger sensing
system has allowed the airbag to be
enabled, the on indicator will light
and stay lit to remind you that
the airbag is active.
For some children, including children
in child restraints, and for very small
adults, the passenger sensing
system may or may not turn off the
right front passenger frontal airbag,
depending upon the person’s seating
posture and body build. Everyone in
the vehicle who has outgrown childrestraints should wear a safety belt
properly —whether or not there is an
airbag for that person.
{CAUTION
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong with
the airbag system. To help avoid
injury to yourself or others, have
the vehicle serviced right away.
SeeAirbag Readiness Light on
page 3-36for more information,
including important safety
information.
If the On Indicator is Lit for a
Child Restraint
If a child restraint has been installed
and the on indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from
the vehicle.3. Remove any additional items
from the seat such as blankets,
cushions, seat covers, seat
heaters, or seat massagers.
4. Reinstall the child restraint
following the directions provided
by the child restraint
manufacturer and refer to
Securing a Child Restraint in the
Right Front Seat Position on
page 1-45.
5. If, after reinstalling the child
restraint and restarting the
vehicle, the on indicator is still lit,
turn the vehicle off. Then
slightly recline the vehicle
seatback and adjust the seat
cushion, if adjustable, to
make sure that the vehicle
seatback is not pushing the child
restraint into the seat cushion.
Also make sure the child restraint
is not trapped under the vehicle
head restraint. If this happens,
adjust the head restraint.
SeeHead Restraints on
page 1-2.
Seats and Restraint System 1-57
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6. Restart the vehicle.
The passenger sensing system
may or may not turn off the
airbag for a child in a child
restraint depending upon the
child’s seating posture and body
build. It is better to secure the
child restraint in a rear seat.
If the Off Indicator is Lit for an
Adult-Size Occupant
If a person of adult-size is sitting
in the right front passenger seat,
but the off indicator is lit, it could
be because that person is not
sitting properly in the seat.If this happens, use the following
steps to allow the system to detect
that person and enable the right
front passenger frontal airbag:
1. Turn the vehicle off.
2. Remove any additional material
from the seat, such as blankets,
cushions, seat covers, seat
heaters, or seat massagers.
3. Place the seatback in the fully
upright position.
4. Have the person sit upright in the
seat, centered on the seat
cushion, with legs comfortably
extended.
5. Restart the vehicle and have the
person remain in this position for
two to three minutes after the
on indicator is lit.
Additional Factors Affecting
System Operation
Safety belts help keep the
passenger in position on the seat
during vehicle maneuvers and
braking, which helps the passenger
sensing system maintain the
passenger airbag status. See
“Safety Belts” and “Child Restraints”
in the Index for additional
information about the importance of
proper restraint use.
A thick layer of additional material,
such as a blanket or cushion, or
aftermarket equipment such as seat
covers, seat heaters, and seat
massagers can affect how well the
passenger sensing system
operates. We recommend that you
not use seat covers or other
aftermarket equipment except when
approved by GM for your speci c
vehicle. SeeAdding Equipment
to Your Airbag-Equipped Vehicle on
page 1-60for more information
about modi cations that can affect
how the system operates.
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Features and
Controls
Keys
Keys...................................2-2
Remote Keyless
Entry (RKE) System..........2-3
Remote Keyless Entry
(RKE) System Operation. . .2-3
Remote Vehicle Start..........2-5
Doors and Locks
Door Locks.........................2-8
Power Door Locks..............2-8
Delayed Locking.................2-8
Programmable Automatic
Door Locks.......................2-9
Rear Door Security Locks. . .2-9
Lockout Protection..............2-9
Liftgate.............................2-10
Power Liftgate...................2-11
Windows
Windows...........................2-14
Power Windows................2-14
Sun Visors........................2-16
Theft-Deterrent Systems
Theft-Deterrent Systems. . . .2-16
Content Theft-Deterrent.....2-16
PASS-Key®III+ Electronic
Immobilizer......................2-17
PASS-Key®III+ Electronic
Immobilizer Operation......2-18
Starting and Operating
Your Vehicle
New Vehicle Break-In.......2-20
Ignition Positions...............2-20
Retained Accessory
Power (RAP)...................2-21
Starting the Engine...........2-22
Engine Coolant Heater......2-23
Automatic Transmission
Operation........................2-24
Tow/Haul Mode.................2-26
Parking Brake...................2-27
Shifting Into Park..............2-27
Shifting Out of Park..........2-29
Parking Over Things
That Burn........................2-29
Engine Exhaust.................2-30
Running the Vehicle
While Parked..................2-30
Mirrors
Manual Rearview Mirror. . . .2-31
Automatic Dimming
Rearview Mirror...............2-31
Outside Power Mirrors......2-32
Outside Power Foldaway
Mirrors............................2-33
Park Tilt Mirrors................2-33
Outside Convex Mirror......2-34
Outside Heated Mirrors.....2-34
Object Detection
Systems
Ultrasonic Rear Parking
Assist (URPA).................2-34
Rear Vision
Camera (RVC)................2-37
OnStar®System
OnStar®System................2-41
Features and Controls 2-1