GMC SIERRA 2011 Manual Online

Black plate (13,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-13
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...

Black plate (14,1)GMC Sierra Owner Manual - 2011
3-14 Seats and Restraints
or the instrument panel...or the safety belts!
With safety belts, you slow down
as the vehicle does. You get more
time to stop. You stop over more
distance, and your strongest bones
take the forces. That is why safety
belts make such good sense.
Questions and Answers About
Safety Belts
Q: Will I be trapped in the vehicleafter a crash if I am wearing a
safety belt?
A: You could be—whether you
are wearing a safety belt or
not. But your chance of being
conscious during and after an
accident, so you canunbuckle
and get out, is muchgreater if
you are belted. And you can
unbuckle a safety belt, even if
you are upside down.

Black plate (15,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-15
Q: If my vehicle has airbags, whyshould I have to wear safety
belts?
A: Airbags are supplemental
systems only; so they work
with safety belts —not instead
of them. Whether or not an
airbag is provided, all occupants
still have to buckle up to get the
most protection. That is true not
only in frontal collisions, but
especially in side and other
collisions. Q: If I am a good driver, and I
never drive far from home,
why should I wear safety
belts?
A: You may be an excellent driver,
but if you are in a crash —even
one that is not your fault —you
and your passenger(s) can be
hurt. Being a good driver does
not protect you from things
beyond your control, such
as bad drivers.
Most accidents occur within
40 km (25 miles) of home.
And the greatest number of
serious injuries and deaths
occur at speeds of less than
65 km/h (40 mph).
Safety belts are for everyone.How to Wear Safety Belts
Properly
This section is only for people of
adult size.
Be aware that there are special
things to know about safety belts
and children. And there are different
rules for smaller children and
infants. If a child will be riding in
the vehicle, see Older Children on
page 3‑49 orInfants and Young
Children on page 3‑51. Follow those
rules for everyone's protection.
It is very important for all occupants
to buckle up. Statistics show that
unbelted people are hurt more
often in crashes than those who
are wearing safety belts.
Occupants who are not buckled up
can be thrown out of the vehicle in a
crash. And they can strike others in
the vehicle who are wearing safety
belts.

Black plate (16,1)GMC Sierra Owner Manual - 2011
3-16 Seats and Restraints
First, before you or your
passenger(s) wear a safety belt,
there is important information you
should know.
Sit up straight and always keep
your feet on the floor in front of you.
The lap part of the belt should beworn low and snug on the hips,
just touching the thighs. In a crash,
this applies force to the strong
pelvic bones and you would be
less likely to slide under the lap
belt. If you slid under it, the belt
would apply force on your abdomen.
This could cause serious or even
fatal injuries. The shoulder belt
should go over the shoulder and
across the chest. These parts of
the body are best able to take
belt restraining forces.
The shoulder belt locks if there is a
sudden stop or crash.
Q: What is wrong with this?
A:
The shoulder belt is too loose.
It will not give as much
protection this way.

Black plate (17,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-17
{WARNING
You can be seriously hurt if the
shoulder belt is too loose. In a
crash, you would move forward
too much, which could increase
injury. The shoulder belt should fit
snugly against your body.Q: What is wrong with this?
A:
The lap belt is too loose.
It will not give nearly as
much protection this way.
{WARNING
You can be seriously hurt if the
lap belt is too loose. In a crash,
you could slide under the lap
belt and apply force on your
abdomen. This could cause
serious or even fatal injuries.
The lap belt should be worn
low and snug on the hips,
just touching the thighs.

Black plate (18,1)GMC Sierra Owner Manual - 2011
3-18 Seats and Restraints
Q: What is wrong with this?
A:The belt is buckled in the wrong
buckle.
{WARNING
You can be seriously injured
if the belt is buckled in the wrong
place like this. In a crash, the belt
would go up over your abdomen.
The belt forces would be there,
not on the pelvic bones. This
could cause serious internal
injuries. Always buckle the belt
into the buckle nearest you. Q: What is wrong with this?
A:
The belt is over an armrest.

Black plate (19,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-19
{WARNING
You can be seriously injured if the
belt goes over an armrest like
this. The belt would be much too
high. In a crash, you can slide
under the belt. The belt force
would then be applied on the
abdomen, not on the pelvic
bones, and that could cause
serious or fatal injuries. Be sure
the belt goes under the armrests.Q: What is wrong with this?
A:
The shoulder belt is worn under
the arm. It should be worn over
the shoulder at all times.
{WARNING
You can be seriously injured
if you wear the shoulder belt
under your arm. In a crash, your
body would move too far forward,
which would increase the chance
of head and neck injury. Also,
the belt would apply too much
force to the ribs, which are not
as strong as shoulder bones.
You could also severely injure
internal organs like your liver or
spleen. The shoulder belt should
go over the shoulder and across
the chest.

Black plate (20,1)GMC Sierra Owner Manual - 2011
3-20 Seats and Restraints
Q: What is wrong with this?
A:The belt is behind the body.
{WARNING
You can be seriously injured by
not wearing the lap-shoulder
belt properly. In a crash, you
would not be restrained by the
shoulder belt. Your body could
move too far forward increasing
the chance of head and neck
injury. You might also slide
under the lap belt. The belt
force would then be applied right
on the abdomen. That could
cause serious or fatal injuries.
The shoulder belt should go
over the shoulder and across
the chest. Q: What is wrong with this?
A:
The belt is twisted across
the body.
{WARNING
You can be seriously injured by a
twisted belt. In a crash, you would
not have the full width of the belt
to spread impact forces. If a belt
is twisted, make it straight so it
can work properly, or ask your
dealer to fix it.

Black plate (21,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-21
Lap-Shoulder Belt
If the vehicle is a regular cab,
then all seating positions in the
vehicle have a lap-shoulder belt.
If the vehicle is a crew or extended
cab, then all seating positions in
the vehicle have a lap-shoulder
belt except for the center front
passenger position (if equipped),
which has a lap belt. SeeLap Belt
(Crew and Extended Cab) on
page 3‑26 for more information.
The following instructions explain
how to wear a lap-shoulder belt
properly.
1. Adjust the seat, if the seat is adjustable, so you can sit up
straight. To see how, see “Seats”
in the Index. 2. Pick up the latch plate and pull
the belt across you. Do not let it
get twisted.
The lap-shoulder belt may lock if
you pull the belt across you very
quickly. If this happens, let the
belt go back slightly to unlock it.
Then pull the belt across you
more slowly.
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.
Engaging the child restraint
locking feature may affect the
passenger sensing system,
if equipped. See Passenger
Sensing System on page 3‑40
for more information.
If the belt stops before it reaches
the buckle, when using the
lap-shoulder belt in a rear center
seating position of a crew-cab,
tilt the latch plate and keep
pulling the safety belt until it
can be buckled.

Black plate (22,1)GMC Sierra Owner Manual - 2011
3-22 Seats and Restraints
3. Push the latch plate into thebuckle until it clicks.
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 3‑27.
If the latch plate will not go fully
into the buckle, check if the
correct buckle is being used.
Position the release button on
the buckle so that the safety belt
could be quickly unbuckled if
necessary. 4. 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.
5. To make the lap part tight, pull
up on the shoulder belt.
It may be necessary to pull
stitching on the safety belt
through the latch plate to fully
tighten the lap belt on smaller
occupants.
To unlatch the belt, push the button
on the buckle. The belt should
return to its stowed position.
Before a door is closed, be sure the
safety belt is out of the way. If a
door is slammed against a safety
belt, damage can occur to both the
safety belt and the vehicle.