CHEVROLET AVALANCHE 2003 1.G Service Manual

{CAUTION:
People should never hold a baby in their arms
while riding in a vehicle. A baby doesn't 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.
1-35

{CAUTION:
Children who are up against, or very close to,
any air bag when it in¯ates can be seriously
injured or killed. Air bags plus lap-shoulder
belts offer outstanding protection for adults
and older children, but not for young children
and infants. Neither the vehicle's safety belt
system nor its air bag system is designed for
them. Young children and infants need the
protection that a child restraint system can
provide.
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.
1-36

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.
{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's
unprotected by any bony structure. This alone
could cause serious or fatal injuries. Young
children always should be secured in
appropriate child restraints.
1-37

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.A rear-facing infant seat (B) provides restraint with the
seating surface against the back of the infant. The
harness system holds the infant in place and, in a crash,
acts to keep the infant positioned in the restraint.
1-38

A forward-facing child seat (C-E) provides restraint for
the child's body with the harness and also sometimes
with surfaces such as T-shaped or shelf-like shields.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.
1-39

Q:How do child restraints work?
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.
For many years, add-on child restraints have used
the adult belt system in the vehicle. To help
reduce the chance of injury, the child also has to be
secured within the restraint. The vehicle's belt
system secures the add-on child restraint in the
vehicle, and the add-on child restraint's harness
system holds the child in place within the restraint.
One system, the three-point harness, has straps
that come down over each of the infant's shoulders
and buckle together at the crotch. The ®ve-point
harness system has two shoulder straps, two
hip straps and a crotch strap. A shield may take the
place of hip straps. A T-shaped shield has
shoulder straps that are attached to a ¯at pad which
rests low against the child's body. A shelf- or
armrest-type shield has straps that are attached to
a wide, shelf-like shield that swings up or to the
side.When choosing a 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. These restraints use the belt system in
your vehicle, but the child also has to be secured
within the restraint to help reduce the chance of personal
injury. 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.
1-40

Where to Put the Restraint
Accident statistics show that children are safer if they
are restrained in the rear rather than the front seat. We,
therefore, 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. Never
put a child in a rear-facing child restraint in the right front
passenger seat unless your vehicle has the passenger
sensing system and the passenger air bag status
indicator shows off. Never put a rear facing child
restraint in the right front passenger seat unless the air
bag is off. Here is why:
{CAUTION:
A child in a rear-facing child restraint can be
seriously injured or killed if the right front
passenger's air bag in¯ates. This is because the
back of the rear-facing child restraint would be
very close to the in¯ating air bag. Be sure the air
bag is off before using a rear-facing child
restraint in the right front seat position.
CAUTION: (Continued)
CAUTION: (Continued)
Even though the passenger sensing system is
designed to turn off the passenger's frontal air
bag if the system detects a rear-facing child
restraint, no system is fail-safe, and no one
can guarantee that an air bag will not deploy
under some unusual circumstance, even
though it is turned off. General Motors
therefore recommends that rear-facing child
restraints be secured in the rear seat whenever
possible, even if the air bag 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.
If your vehicle has the passenger sensing system and
you need to secure a rear-facing child restraint in
the right front passenger's seat, the passenger's frontal
air bag must be off. See
Passenger Sensing System
on page 1-62andSecuring a Child Restraint in the Right
Front Seat Position on page 1-48for more on this
including important safety information.
1-41

Wherever you install it, be sure to secure the child
restraint properly.
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.
Top Strap
Some child restraints have a top strap, or ªtop tether.º It
can help restrain the child restraint during a collision.
For it to work, a top strap must be properly anchored to
the vehicle. Some top strap-equipped child restraints
are designed for use with or without the top strap being
anchored. Others require the top strap always to be
anchored. Be sure to read and follow the instructions for
your child restraint. If yours requires that the top strap
be anchored, don't use the restraint unless it is anchored
properly.
If the child restraint does not have a top strap, one can
be obtained, in kit form, for many child restraints.
Ask the child restraint manufacturer whether or not a kit
is available.In Canada, the law requires that forward-facing child
restraints have a top strap, and that the strap be
anchored. In the United States, some child restraints also
have a top strap. If your child restraint has a top strap, it
should be anchored.
Anchor the top strap to one of the following anchor points.
Be sure to use an anchor point located on the same side
of the vehicle as the seating position where the child
restraint will be placed.
If you have an adjustable head restraint, route the top
strap under it.
1-42

Once you have the top strap anchored, you'll be ready
to secure the child restraint itself. Tighten the top
strap when and as the child restraint manufacturer's
instructions say.
Top Strap Anchor Location
An anchor loop bracket for a top strap is located on the
back of the rear seat frame above the ¯oor for each
rear seating position. In order to get to the brackets,
you'll have to fold the rear seatback(s).
See
Rear Seat Operation on page 1-8for information on
folding the rear seatbacks.
Lower Anchorages and Top Tethers
for Children (LATCH System)
Your vehicle has the LATCH system. You will ®nd
anchors (A) in the center and right side passenger
second row seating positions.
60/40 Split Rear Seat Folded
1-43

This system, designed to make installation of child
restraints easier, does not use the vehicle's safety belts.
Instead, it uses vehicle anchors (A, B) and child
restraint attachements to secure the restraints. Some
restraints also use another vehicle anchor to secure
a top tether strap (C).
In order to use the LATCH system in your vehicle, you
need a child restraint designed for that system.
To assist you in locating the lower anchors for this child
restraint system, each seating position with the
LATCH system has a visible metal anchorage point in
the seat where the seatback meets the seat cushion.
1-44