2004 CHEVROLET AVALANCHE ECU

Front Seats......................................................1-2
Manual Passenger Seat..................................1-2
Power Seats..................................................1-2
Power Lumbar...............................................1-3
Heated Seats.................................................1-4
Reclining Seatbacks........................................1-5
Head Restraints.............................................1-7
Rear Seats.......................................................1-7
Rear Seat Operation.......................................1-7
Safety Belts.....................................................1-9
Safety Belts: They Are for Everyone.................1-9
Questions and Answers About Safety Belts......1-13
How to Wear Safety Belts Properly.................1-14
Driver Position..............................................1-14
Safety Belt Use During Pregnancy..................1-22
Right Front Passenger Position.......................1-23
Center Front Passenger Position.....................1-23
Rear Seat Passengers..................................1-24
Rear Safety Belt Comfort Guides for
Children and Small Adults..........................1-27
Safety Belt Extender.....................................1-29
Child Restraints.............................................1-30
Older Children..............................................1-30
Infants and Young Children............................1-32
Child Restraint Systems.................................1-36
Where to Put the Restraint.............................1-38
Top Strap....................................................1-40Top Strap Anchor Location.............................1-41
Lower Anchorages and Top Tethers
for Children (LATCH System)......................1-42
Securing a Child Restraint Designed
for the LATCH System...............................1-44
Securing a Child Restraint in a
Rear Seat Position....................................1-44
Securing a Child Restraint in the
Center Front Seat Position..........................1-46
Securing a Child Restraint in the
Right Front Seat Position............................1-47
Air Bag Systems............................................1-51
Where Are the Air Bags?...............................1-54
When Should an Air Bag Inate?....................1-57
What Makes an Air Bag Inate?.....................1-59
How Does an Air Bag Restrain?.....................1-59
What Will You See After an
Air Bag Inates?.......................................1-60
Passenger Sensing System............................1-62
Servicing Your Air Bag-Equipped Vehicle.........1-66
Adding Equipment to Your
Air Bag-Equipped Vehicle...........................1-66
Restraint System Check..................................1-67
Checking Your Restraint Systems...................1-67
Replacing Restraint System Parts
After a Crash............................................1-68
Section 1 Seats and Restraint Systems
1-1

3. Pick up the latch plate and pull the belt across you.
Don’t let it get twisted.
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 isn’t long enough, seeSafety Belt
Extender on page 1-29.
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. To make the lap part tight, pull down on the buckle
end of the belt as you pull up on the shoulder belt.
1-15

Lap-Shoulder Belt
All rear seating positions have lap-shoulder belts.
Here is how to wear a lap-shoulder belt properly.
1. Pick up the latch plate and pull the belt across you.
Do not let it get twisted.
2. Push the latch plate into the buckle until it clicks.
Pull up on the latch plate to make sure it is secure.
When the shoulder belt is pulled out all the way,
it will lock. If it does, let it go back all the way and
start again.If the belt is not long enough, seeSafety Belt
Extender on page 1-29.
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.
3. To make the lap part tight, pull down on the buckle
end of the belt as you pull up on the shoulder part.
1-25

{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
CAUTION: (Continued)
CAUTION: (Continued)
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.
1-33

{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 is unprotected by any bony structure.
This alone could cause serious or fatal
injuries. Young children always should be
secured in appropriate child restraints.
1-35

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 or
the LATCH 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.
Where to Put the Restraint
Accident statistics show that children are safer if they
are restrained in the rear rather than the front seat.
General Motors recommends 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 air bag deploys.
1-38

{CAUTION:
A child in a rear-facing child restraint can be
seriously injured or killed if the right front
passenger’s air bag inates. This is because
the back of the rear-facing child restraint
would be very close to the inating air bag.
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 recommends that
rear-facing child restraints be secured in the
rear seat, 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 seatDo not use child restraints in the center front seat
position. The restraints will not work properly.
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.
1-39

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.
{CAUTION:
Each top tether bracket is designed to anchor
only one child restraint. Attaching more than
one child restraint to a single bracket could
cause the anchor to come loose or even break
during a crash. A child or others could be
injured if this happens. To help prevent injury
to people and damage to your vehicle, attach
only one child restraint per bracket.
Once you have the top strap anchored, you will 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). SeeRear Seat
Operation on page 1-7for information on folding the
rear seatbacks.60/40 Split Rear Seat Folded
1-41