2011 GMC ACADIA ECU

Black plate (1,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Seats and Restraints 3-1
Seats and
Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . 3-2
Front Seats
Seat Adjustment . . . . . . . . . . . . . . 3-3
Power Seat Adjustment . . . . . . . 3-4
Lumbar Adjustment . . . . . . . . . . . 3-6
Reclining Seatbacks . . . . . . . . . . 3-7
Heated and Ventilated FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Rear Seats
Rear Seats . . . . . . . . . . . . . . . . . . 3-10
Third Row Seats . . . . . . . . . . . . . 3-13
Safety Belts
Safety Belts . . . . . . . . . . . . . . . . . . 3-16
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . 3-19
Lap-Shoulder Belt . . . . . . . . . . . 3-25 Safety Belt Use During
Pregnancy . . . . . . . . . . . . . . . . . . 3-30
Safety Belt Extender . . . . . . . . . 3-31
Safety System Check . . . . . . . . 3-31
Safety Belt Care . . . . . . . . . . . . . 3-32
Replacing Safety Belt System Parts After a Crash . . . . . . . . . 3-32
Airbag System
Airbag System . . . . . . . . . . . . . . . 3-33
Where Are the Airbags? . . . . . 3-35
When Should an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . 3-36
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . 3-38
How Does an Airbag Restrain? . . . . . . . . . . . . . . . . . . . 3-38
What Will You See After an Airbag Inflates? . . . . . . . . . . . . 3-39
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . 3-41
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . 3-45 Adding Equipment to the
Airbag-Equipped Vehicle . . . 3-46
Airbag System Check . . . . . . . . 3-47
Replacing Airbag System Parts After a Crash . . . . . . . . . 3-48
Child Restraints
Older Children . . . . . . . . . . . . . . . 3-48
Infants and Young
Children . . . . . . . . . . . . . . . . . . . . 3-51
Child Restraint Systems . . . . . 3-53
Where to Put the Restraint . . . 3-55
Lower Anchors and Tethers for Children
(LATCH System) . . . . . . . . . . . 3-57
Replacing LATCH System Parts After a Crash . . . . . . . . . 3-64
Securing Child Restraints (Rear Seat) . . . . . . . . . . . . . . . . . 3-65
Securing Child Restraints (Right Front
Passenger Seat) . . . . . . . . . . . 3-67

Black plate (14,1)GMC Acadia/Acadia Denali Owner Manual - 2011
3-14 Seats and Restraints
3. Pull up on the release lever onthe back of the seat.
4. Push the seatback forward to lay flat.
Returning the Seat to the
Seating Position
To return the seatback to the
seating position:
1. From the rear of the vehicle,raise the seatback to the upright
position using the pullstrap on
the back of the third row seat,
or lift the seatback and push
it into place from inside the
vehicle.
{WARNING
If either seatback is not locked, it
could move forward in a sudden
stop or crash. That could cause
injury to the person sitting there.
Always push and pull on the
seatbacks to be sure they are
locked.
2. Push and pull on the seatback to make sure it is locked in place.
{WARNING
A safety belt that is improperly
routed, not properly attached,
or twisted will not provide the
protection needed in a crash.
The person wearing the belt could
be seriously injured. After raising
the rear seatback, always check
to be sure that the safety belts
are properly routed and attached,
and are not twisted.
3. Reconnect the center safety belt mini-latch to the mini-buckle.
Do not let it twist.
4. Pull on the safety belt to be sure the mini-latch is secure.

Black plate (26,1)GMC Acadia/Acadia Denali Owner Manual - 2011
3-26 Seats and Restraints
If the shoulder portion of a
passenger belt is pulled out
all the way, the child restraint
locking feature may be engaged.
If this happens, let the belt go
back all the way and start again.
3. Push the latch plate into thebuckle until it clicks. 4. Pull up on the latch plate to
make sure it is secure. If the belt
is not long enough, see Safety
Belt Extender on page 3‑31.
Position the release button on
the buckle so that the safety belt
could be quickly unbuckled if
necessary.
5. If equipped with a shoulder belt height adjuster, move it to the
height that is right for you.
See “Shoulder Belt Height
Adjuster” later in this section
for instructions on use and
important safety information.
6. To make the lap part tight, pull up on the shoulder belt.
It may be necessary to pull
the stitching on the safety belt
through the latch plate to fully
tighten the lap belt on smaller
occupants.

Black plate (31,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Seats and Restraints 3-31
A pregnant woman should wear
a lap-shoulder belt, and the lap
portion should be worn as low
as possible, below the rounding,
throughout the pregnancy.
The best way to protect the fetus is
to protect the mother. When a safety
belt is worn properly, it is more likely
that the fetus will not be hurt in a
crash. For pregnant women, as for
anyone, the key to making safety
belts effective is wearing them
properly.
Safety Belt Extender
If the vehicle's safety belt will fasten
around you, you should use it.
But if a safety belt is not long
enough, your dealer will order you
an extender. When you go in to
order it, take the heaviest coat you
will wear, so the extender will be
long enough for you. To help avoid
personal injury, do not let someone
else use it, and use it only for the
seat it is made to fit. The extender
has been designed for adults.
Never use it for securing child seats.
To wear it, attach it to the regular
safety belt. For more information,
see the instruction sheet that
comes with the extender.
Safety System Check
Now and then, check that the safety
belt reminder light, safety belts,
buckles, latch plates, retractors,
and anchorages are working
properly. Look for any other loose
or damaged safety belt system parts
that might keep a safety belt system
from doing its job. See your dealer
to have it repaired. Torn or frayed
safety belts may not protect you in
a crash. They can rip apart under
impact forces. If a belt is torn or
frayed, get a new one right away.
Make sure the safety belt reminder
light is working. SeeSafety Belt
Reminders on page 5‑15 for more
information.
Keep safety belts clean and dry.
See Safety Belt Care on page 3‑32.

Black plate (34,1)GMC Acadia/Acadia Denali Owner Manual - 2011
3-34 Seats and Restraints
{WARNING
Airbags inflate with great force,
faster than the blink of an eye.
Anyone who is up against, or
very close to, any airbag when it
inflates can be seriously injured
or killed. Do not sit unnecessarily
close to any airbag, as you would
be if you were sitting on the edge
of the seat or leaning forward.
Safety belts help keep you in
position before and during a
crash. Always wear a 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.
{WARNING
Children who are up against,
or very close to, any airbag
when it inflates 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
the vehicle. To read how, see
Older Children on page 3‑48or
Infants and Young Children on
page 3‑51.
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. See Airbag
Readiness Light on page 5‑15
for more information.

Black plate (36,1)GMC Acadia/Acadia Denali Owner Manual - 2011
3-36 Seats and Restraints
Driver Side shown,
Passenger Side similar
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.
{WARNING
If something is between an
occupant and an airbag, the
airbag might not inflate properly
or it might force the object
into that person causing severe
injury or even death. The path
of an inflating 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 inflation path of a
seat-mounted side impact airbag.
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
inflating roof-rail airbag will be
blocked.
When Should an Airbag
Inflate?
Frontal airbags are designed
to inflate 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.
However, they are only designed
to inflate if the impact exceeds
a predetermined deployment
threshold. Deployment thresholds
are used to predict how severe a
crash is likely to be in time for the
airbags to inflate and help restrain
the occupants.
Whether the frontal airbags will
or should deploy is not based on
how fast the vehicle is traveling.
It depends largely on what you hit,
the direction of the impact, and how
quickly the vehicle slows down.

Black plate (41,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Seats and Restraints 3-41
Passenger Sensing
System
The vehicle has a passenger
sensing system for the right front
passenger position. The passenger
airbag status indicator will be visible
on the instrument panel when the
vehicle is started.
United States
Canada and MexicoThe words ON and OFF, or the
symbol for on and off, are visible
during the system check. If you
are using remote start, if equipped,
to start the vehicle from a distance,
you may not see the system
check. When the system check is
complete, either the word ON or
OFF, or the symbol for on or off, will
be visible. See
Passenger Airbag
Status Indicator on page 5‑16.
The passenger sensing system
turns off the right front passenger
frontal airbag under certain
conditions. The driver airbag,
seat‐mounted side impact airbags
and the roof-rail airbags are not
affected by the passenger sensing
system.
The passenger sensing system
works with sensors that are part
of the right front passenger seat. The sensors are designed to detect
the presence of a properly-seated
occupant and determine if the
right front passenger frontal airbag
should be enabled (may inflate)
or not.
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.

Black plate (42,1)GMC Acadia/Acadia Denali Owner Manual - 2011
3-42 Seats and Restraints
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.
{WARNING
A child in a rear-facing child
restraint can be seriously
injured or killed if the right
front passenger airbag inflates.
This is because the back of the
rear-facing child restraint would
be very close to the inflating
airbag. A child in a forward-facing
child restraint can be seriously
injured or killed if the right front
passenger airbag inflates 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
(Continued)
WARNING (Continued)
deploy under some unusual
circumstance, even though the
airbag is turned off.
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.
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.
See Passenger Airbag Status
Indicator on page 5‑16.
The passenger sensing system is
designed to turn on (may inflate) 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.