2004 CHEVROLET OPTRA ECU

Front Seats......................................................1-2
Manual Seats (With Sliding
Storage Tray).............................................1-2
Manual Seats (Without Sliding Storage Tray)......1-3
Driver Seat Height Adjuster..............................1-4
Manual Lumbar..............................................1-4
Reclining Seatbacks........................................1-5
Head Restraints.............................................1-7
Rear Seats.......................................................1-8
Rear Seat Operation.......................................1-8
Safety Belts...................................................1-10
Safety Belts: They Are for Everyone................1-10
Questions and Answers About Safety Belts......1-14
How to Wear Safety Belts Properly.................1-15
Driver Position..............................................1-15
Safety Belt Use During Pregnancy..................1-23
Right Front Passenger Position.......................1-24
Rear Seat Passengers..................................1-24
Center Rear Passenger Position.....................1-28
Safety Belt Pretensioners...............................1-28
Child Restraints.............................................1-29
Older Children..............................................1-29
Infants and Young Children............................1-31Child Restraint Systems.................................1-35
Where to Put the Restraint.............................1-38
Top Strap....................................................1-39
Top 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.........................................1-45
Securing a Child Restraint in a Rear Seat
Position...................................................1-45
Securing a Child Restraint in the Right Front
Seat Position............................................1-48
Air Bag Systems............................................1-51
Where Are the Air Bags?...............................1-54
When Should an Air Bag Inflate?....................1-56
What Makes an Air Bag Inflate?.....................1-57
How Does an Air Bag Restrain?.....................1-57
What Will You See After an Air Bag Inflates?.......1-58
Servicing Your Air Bag-Equipped Vehicle.........1-60
Restraint System Check..................................1-60
Checking Your Restraint Systems...................1-60
Replacing Restraint System Parts After
a Crash...................................................1-61
Section 1 Seats and Restraint Systems
1-1

{CAUTION:
If the seatback is not locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
press rearward on the seatback to be sure it is
locked.
{CAUTION:
A safety belt that is improperly routed, not
properly attached, or twisted will not provide
the protection needed in a crash. The person
wearing the belt could be seriously injured.
CAUTION: (Continued)
CAUTION: (Continued)
After raising the rear seatback, always check
to be sure that the safety belts are properly
routed and attached, and are not twisted.
To return the seatback to the upright position, do the
following:
1. Lift up the seatback and push it to its original
position. Ensure that the safety belts are not twisted
or caught under the seatback.
2. Push rearward firmly on the top of the seatback
until it latches securely in the fully upright position.
1-9

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 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.
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.
1-16

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.
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.
Be sure you are using the correct buckle and that
the latch plate clicks when inserted into the buckle.
Pull up on the latch plate to make sure it is secure.
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.
1-25

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.
1-32

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.
1-34

{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 flat
surface. Make sure that the infant’s head rests toward
the center of the vehicle.
1-35

A booster seat (F-G) is a child restraint designed to
improve the fit of the vehicle’s safety belt system. Some
booster seats have a shoulder belt positioner, and some
high-back booster seats have a five-point harness. A
booster seat can also help a child to see out the window.
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 five-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 flat 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.
1-37