ECU GMC SIERRA 2007 Owner's Manual

Front Seats..................................................... 9
Manual Seats................................................ 9
Power Seats............................................... 10
Manual Lumbar........................................... 11
Power Lumbar............................................. 11
Heated Seats.............................................. 12
Memory Seat, Mirrors, and Pedals.............. 13
Reclining Seatbacks.................................... 15
Head Restraints.......................................... 18
Seatback Latches........................................ 19
Center Seat................................................ 19
Rear Seats.................................................... 20
Rear Seat Operation (Full Bench)............... 20
Rear Seat Operation (Split Bench).............. 21
Safety Belts.................................................. 22
Safety Belts: They Are for Everyone........... 22
Questions and Answers About
Safety Belts............................................. 26
How to Wear Safety Belts Properly............. 27
Driver Position............................................. 28
Shoulder Belt Height Adjustment................. 35
Safety Belt Use During Pregnancy.............. 36Right Front Passenger Position................... 37
Center Front Passenger Position
(Regular Cab).......................................... 37
Center Front Passenger Position
(Crew and Extended Cab)....................... 38
Rear Seat Passengers................................ 39
Rear Safety Belt Comfort Guides................ 41
Safety Belt Pretensioners............................ 44
Safety Belt Extender................................... 44
Child Restraints............................................ 45
Older Children............................................. 45
Infants and Young Children......................... 48
Child Restraint Systems.............................. 51
Where to Put the Restraint.......................... 56
Lower Anchors and Tethers for
Children (LATCH).................................... 58
Securing a Child Restraint in a Rear
Seat Position........................................... 67
Securing a Child Restraint in the Center
Front Seat Position.................................. 69
Securing a Child Restraint in the Right
Front Seat Position (With Airbag
Off Switch)............................................... 70
Section 1 Seats and Restraint Systems
7

Securing a Child Restraint in the Right
Front Seat Position (With Passenger
Sensing System)...................................... 76
Securing a Child Restraint in the Right
Front Seat Position (Crew Cab)
(Heavy Duty Crew Cab Only)................... 80
Airbag System.............................................. 83
Where Are the Airbags?.............................. 86
When Should an Airbag Inate?.................. 89
What Makes an Airbag Inate?................... 91
How Does an Airbag Restrain?................... 91What Will You See After an
Airbag Inates?........................................ 92
Airbag Off Switch........................................ 93
Passenger Sensing System ......................... 97
Servicing Your Airbag-Equipped Vehicle.... 102
Adding Equipment to Your
Airbag-Equipped Vehicle........................ 102
Restraint System Check............................. 104
Checking the Restraint Systems................ 104
Replacing Restraint System Parts After
a Crash................................................. 105
Section 1 Seats and Restraint Systems
8

Driver Position
Lap-Shoulder Belt
The driver has a lap-shoulder belt. Here is how to
wear it properly.
1. Close and lock the door.
2. Adjust the seat so you can sit up straight. To
see how, see “Seats” in the Index.
3. 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.
4. Push the latch plate into the buckle until
it clicks.
Pull up on the latch plate to make sure it is
secure. If the belt is not long enough,
seeSafety Belt Extender on page 44.
Make sure the release button on the buckle is
positioned so you would be able to unbuckle
the safety belt quickly if you ever had to.
5. Move the shoulder belt height adjuster to the
height that is right for you. Improper shoulder
belt height adjustment could reduce the
effectiveness of the safety belt in a crash. See
Shoulder Belt Height Adjustment on page 35.
28

Rear Seat Passengers
It is very important for rear seat passengers to
buckle up! Accident statistics show that unbelted
people in the rear seat are hurt more often in
crashes than those who are wearing safety belts.
Rear passengers who are not safety belted
can be thrown out of the vehicle in a crash. And
they can strike others in the vehicle who are
wearing safety belts.
Lap-Shoulder Belt
All rear seat positions have lap-shoulder belts.
Here is how to wear one properly.
1. Pick up the latch plate and pull the belt across
you. Do not let it get twisted.
The 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.
2. Push the latch plate into the buckle until it
clicks.
Pull up on the latch plate to make sure it is
secure.
39

Safety Belt Pretensioners
Your vehicle has safety belt pretensioners for the
driver and right front passenger. Although you
cannot see them, they are part of the safety belt
assembly. They help tighten the safety belts during
the early stages of a moderate to severe frontal,
near frontal, or rear crash if the threshold conditions
for pretensioner activation are met. And, if your
vehicle has side impact rollover airbags, safety belt
pretensioners can help tighten the safety belts in a
side crash or a rollover event.
Pretensioners work only once. If they activate in a
crash, you will need to get new ones, and
probably other new parts for your safety belt
system. SeeReplacing Restraint System Parts
After a Crash on page 105.
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/retailer 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 t. 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.
44

Infants and Young Children
Everyone in a vehicle needs protection! This
includes infants and all other children. Neither the
distance traveled nor the age and size of the
traveler changes the need, for everyone, to use
safety restraints. In fact, the law in every state
in the United States and in every Canadian
province says children up to some age must be
restrained while in a vehicle.
{CAUTION:
Children can be seriously injured or
strangled if a shoulder belt is wrapped
around their neck and the safety belt
continues to tighten. Never leave children
unattended in a vehicle and never allow
children to play with the safety belts.Every time infants and young children ride in
vehicles, they should have the protection provided
by appropriate restraints. Young children should
not use the vehicle’s adult safety belts alone,
unless there is no other choice. Instead, they need
to use a child restraint.
{CAUTION:
People should never hold a baby in their
arms while riding in a vehicle. A baby
does not weigh much — until a crash.
During a crash a baby will become so
heavy it is not possible to hold it. For
example, in a crash at only 25 mph
(40 km/h), a 12 lb (5.5 kg) baby will
suddenly become a 240 lb (110 kg) force
on a person’s arms. A baby should be
secured in an appropriate restraint.
48

Q:What are the different types of add-on
child restraints?
A:Add-on child restraints, which are purchased by
the vehicle’s owner, are available in four basic
types. Selection of a particular restraint should
take into consideration not only the child’s
weight, height, and age but also whether or not
the restraint will be compatible with the motor
vehicle in which it will be used.
For most basic types of child restraints, there
are many different models available. When
purchasing a child restraint, be sure it is
designed to be used in a motor vehicle. If it is,
the restraint will have a label saying that it
meets federal motor vehicle safety standards.
The restraint manufacturer’s instructions that
come with the restraint state the weight and
height limitations for a particular child restraint.
In addition, there are many kinds of restraints
available for children with special needs.
{CAUTION:
Newborn infants need complete support,
including support for the head and neck.
This is necessary because a newborn
infant’s neck is weak and its head weighs
so much compared with the rest of its
body. In a crash, an infant in a rear-facing
seat settles into the restraint, so the crash
forces can be distributed across the
strongest part of an infant’s body, the back
and shoulders. Infants always should be
secured in appropriate infant restraints.
50

{CAUTION:
The body structure of a young child is
quite unlike that of an adult or older child,
for whom the safety belts are designed. A
young child’s hip bones are still so small
that the vehicle’s regular safety belt may
not remain low on the hip bones, as it
should. Instead, it may settle up around
the child’s abdomen. In a crash, the belt
would apply force on a body area that is
unprotected by any bony structure. This
alone could cause serious or fatal injuries.
Young children always should be secured
in appropriate child restraints.
Child Restraint Systems
An infant car bed (A), a special bed made for use
in a motor vehicle, is an infant restraint system
designed to restrain or position a child on a
continuous at surface. Make sure that the infant’s
head rests toward the center of the vehicle.
51

A booster seat (F-G) is a child restraint designed
to improve the t of the vehicle’s safety belt
system. Some booster seats have a shoulder belt
positioner, and some high-back booster seats
have a ve-point harness. A booster seat can also
help a child to see out the window.
Q:How Should I Use a Child Restraint?
A:A child restraint system is any device designed
for use in a motor vehicle to restrain, seat, or
position children. A built-in child restraint
system is a permanent part of the motor
vehicle. An add-on child restraint system is a
portable one, which is purchased by the
vehicle’s owner. To help reduce injuries, an
add-on child restraint must be secured in
the vehicle. With built-in or add-on child
restraints, the child has to be secured within
the child restraint.
When choosing an add-on child restraint, be
sure the child restraint is designed to be
used in a vehicle. If it is, it will have a label
saying that it meets federal motor vehicle
safety standards. Then follow the instructions
for the restraint. You may nd these
instructions on the restraint itself or in a
booklet, or both.
53

Securing an Add-on Child Restraint in
the Vehicle
{CAUTION:
A child can be seriously injured or killed
in a crash if the child restraint is not
properly secured in the vehicle. Make sure
the child restraint is properly installed in
the vehicle using the vehicle’s safety belt
or LATCH system, following the
instructions that came with that restraint,
and also the instructions in this manual.To help reduce the chance of injury, the child
restraint must be secured in the vehicle. Child
restraint systems must be secured in vehicle seats
by lap belts or the lap belt portion of a lap-shoulder
belt, or by the LATCH system. SeeLower
Anchors and Tethers for Children (LATCH) on
page 58for more information. A child can
be endangered in a crash if the child restraint is
not properly secured in the vehicle.
When securing an add-on child restraint, refer to
the instructions that come with the restraint
which may be on the restraint itself or in a booklet,
or both, and to this manual. The child restraint
instructions are important, so if they are not
available, obtain a replacement copy from the
manufacturer.
Keep in mind that an unsecured child restraint can
move around in a collision or sudden stop and
injure people in the vehicle. Be sure to properly
secure any child restraint in your vehicle — even
when no child is in it.
54