2007 GMC YUKON Owner's Manual

Frontal airbags may inate at different crash
speeds. For example:
If the vehicle hits a stationary object, the
airbags could inate at a different crash speed
than if the vehicle hits a moving object.
If the vehicle hits an object that deforms, the
airbags could inate at a different crash
speed than if the vehicle hits an object that
does not deform.
If the vehicle hits a narrow object (like a pole)
the airbags could inate at a different crash
speed than if the vehicle hits a wide object
(like a wall).
If the vehicle goes into an object at an angle
the airbags could inate at a different crash
speed than if the vehicle goes straight into the
object.
The frontal airbags (driver and right front
passenger) are not intended to inate during
vehicle rollovers, rear impacts, or in many side
impacts.Your vehicle has a seat position sensor which
enables the sensing system to monitor the
fore and aft position of the driver’s seat. Seat
position sensors provide information that is used
to determine if the airbags should deploy at a
reduced level or at full deployment.
Your vehicle has roof-mounted rollover airbags
and a rollover sensor. SeeAirbag System on
page 90. These “rollover capable” airbags
are intended to inate in moderate to severe side
crashes, during a rollover or in a severe frontal
impact. A roof-mounted rollover airbag will inate if
the crash severity is above the system’s designed
“threshold level.” The threshold level can vary
with specic vehicle design. Roof-mounted rollover
airbags are not intended to inate in rear
impacts. Both roof-mounted rollover airbags will
deploy when either side of the vehicle is struck or
during a rollover, or in a severe frontal impact.
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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 roof-mounted rollover airbags,
ination is determined by the location and severity
of the impact or a rollover event.
The airbag system is designed to work properly
under a wide range of conditions, including off-road
usage. Observe safe driving speeds, especially
on rough terrain. As always, wear your safety belt.
SeeOff-Road Driving on page 359for tips on
off-road driving.What Makes an Airbag Inate?
In an impact of sufficient severity, the airbag
sensing system detects that the vehicle is
in a crash. In the case of a roof-mounted rollover
airbag, the sensing system detects that the
vehicle is about to roll over or has been in a severe
frontal impact. The sensing system triggers a
release of gas from the inator, which inates the
airbag. The inator, airbag, and related hardware
are all part of the airbag modules inside the
steering wheel and in the instrument panel in front
of the right front passenger. For vehicles with
roof-mounted rollover airbags, the airbag modules
are located in the ceiling of the vehicle, near
the side windows.
If your vehicle has a third row seat with
roof-mounted rollover airbags, the airbag modules
are located inside the rear-most pillar trim and
above in the ceiling above the xed rear glass.
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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.
The airbag supplements the protection provided by
safety belts. Airbags distribute the force of the
impact more evenly over the occupant’s upper
body, stopping the occupant more gradually. But
the frontal airbags would not help you in many
types of collisions, including rollovers, rear
impacts, and many side impacts, primarily because
an occupant’s motion is not toward the airbag.Roof-mounted rollover airbags would not help
you in many types of collisions, including many
frontal or near frontal collisions, and rear impacts,
primarily because an occupant’s motion is not
toward the airbag. Airbags should never be
regarded as anything more than a supplement
to safety belts, and then only in moderate to
severe frontal or near-frontal collisions for the
driver’s and right front passenger’s frontal airbags,
and only in moderate to severe side collisions
for roof-mounted rollover airbags.
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What Will You See After an Airbag
Inates?
After a frontal airbag inates, it quickly deates, so
quickly that some people may not even realize
an airbag inated. Roof-mounted rollover airbags
are designed to deate more slowly and may
still be at least partially inated minutes after the
vehicle comes to rest. Some components of
the airbag module — the steering wheel hub for
the driver’s airbag, the instrument panel for
the right front passenger’s airbag, and the area
along the ceiling of the vehicle near the side
windows for vehicles with roof–mounted side
impact airbags — may be hot for a short time.
The parts of the airbag that come into contact with
you may be warm, but not too hot to touch.
There will be some smoke and dust coming from
the vents in the deated airbags. Airbag ination
does not prevent the driver from seeing out of the
windshield or being able to steer the vehicle,
nor does it stop people from leaving the vehicle.
{CAUTION:
When an airbag inates, there is dust in
the air. This dust could cause breathing
problems for people with a history of
asthma or other breathing trouble. To
avoid this, everyone in the vehicle should
get out as soon as it is safe to do so. If
you have breathing problems but cannot
get out of the vehicle after an airbag
inates, then get fresh air by opening a
window or a door. If you experience
breathing problems following an airbag
deployment, you should seek medical
attention.
Your vehicle has a feature that may automatically
unlock the doors and turn the interior lamps on
when the airbags inate. You can lock the
doors again and turn the interior lamps off by
using the controls for those features.
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In many crashes severe enough to inate the
airbag, windshields are broken by vehicle
deformation. Additional windshield breakage
may also occur from the right front passenger
airbag.
Airbags are designed to inate only once. After
an airbag inates, you will need some new
parts for your airbag system. If you do not get
them, the airbag system will not be there to help
protect you in another crash. A new system will
include airbag modules and possibly other
parts. The service manual for your vehicle
covers the need to replace other parts.
Your vehicle has a crash sensing and
diagnostic module which records information
after a crash. SeeVehicle Data Collection and
Event Data Recorders on page 582.
Let only qualied technicians work on your
airbag systems. Improper service can mean
that an airbag system will not work properly.
See your dealer for service.
Passenger Sensing System
Your vehicle has a passenger sensing system.
The passenger airbag status indicator on the
overhead console will be visible when you turn
your ignition key to RUN or START. The words
ON and OFF or the symbol for on and off, will
be visible during the system check. When
the system check is complete, either the word
ON or the word OFF, or the symbol for on or the
symbol for off will be visible. SeePassenger
Airbag Status Indicator on page 230.
The passenger sensing system will turn off the
right front passenger’s frontal airbag under certain
conditions. The driver’s airbags are not part of
the passenger sensing system.
United StatesCanada
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The passenger sensing system works with
sensors that are part of the right front passenger’s
seat and safety belt. The sensors are designed
to detect the presence of a properly-seated
occupant and determine if the passenger’s airbag
should be enabled (may inate) or not.
Accident statistics show that children are safer if
they are restrained in the rear rather than the front
seat. We recommend that child restraints be
secured in a rear seat, including an infant riding
in a rear-facing infant seat, a child riding in a
forward-facing child seat, and an older child riding
in a booster seat.
Your vehicle has a rear seat that will accommodate
a rear-facing child restraint. A label on your 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’s airbag inates. This is
because the back of the rear-facing child
restraint would be very close to the
inating airbag. Be sure the airbag is off
before using a rear-facing child restraint
in the passenger’s position.
Even though the passenger sensing
system is designed to turn off the
passenger’s frontal airbag if the system
detects a rear-facing child restraint, no
system is fail-safe, and no one can
guarantee that an airbag will not deploy
under some unusual circumstance, even
though it is turned off. We recommend
that rear-facing child restraints be secured
in the rear seat, even if the airbag is off.
CAUTION: (Continued)
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CAUTION: (Continued)
If you need to 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’s airbag if:
the right front passenger seat is unoccupied
the system determines that an infant is present
in a rear-facing infant seat
the system determines that a small child is
present in a forward-facing child restraint
the system determines that a small child is
present in a booster seat
a right front passenger takes his/her weight off
of the seat for a period of time
the right front passenger seat is occupied by
a smaller person, such as a child who has
outgrown child restraints
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 passenger’s airbag, the off indicator will light
and stay lit to remind you that the airbag is off.
If a child restraint has been installed and the
on indicator is lit, turn the vehicle off. Remove
the child restraint from the vehicle and reinstall
the child restraint following the child restraint
manufacturer’s directions and refer toSecuring a
Child Restraint in the Right Front Seat Position
on page 86.
If after reinstalling the child restraint and restarting
the vehicle, the on indicator is still lit, check to
make sure that the vehicle’s seatback is not
pressing the child restraint into the seat cushion.
If this happens, slightly recline the vehicle’s
seatback and adjust the seat cushion if possible.
Also make sure the child restraint is not trapped
under the vehicle head restraint. If this happens,
adjust the head restraint.
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If the on indicator is still lit, secure the child in
the child restraint in a rear seat position in
the vehicle and check with your dealer.
The passenger sensing system is designed to
enable (may inate) the right front passenger’s
airbag anytime the system senses that a person
of adult size is sitting properly in the right front
passenger’s 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 who have outgrown child
restraints and for very small adults, the passenger
sensing system may or may not turn off the
right front passenger’s airbag, depending upon
the person’s seating posture and body build.
Everyone in your vehicle who has outgrown
child restraints should wear a safety belt
properly — whether or not there is an airbag
for that person.
If a person of adult-size is sitting in the right front
passenger’s seat, but the off indicator is lit, it
could be because that person is not sitting properly
in the seat. If this happens, turn the vehicle off
and ask the person to place the seatback in
the fully upright position, then sit upright in theseat, centered on the seat cushion, with the
person’s legs comfortably extended. Restart the
vehicle and have the person remain in this position
for about two minutes. This will allow the system
to detect that person and then enable the
passenger’s airbag.
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