2004 CHEVROLET SILVERADO ECU

Front Seats......................................................1-3
Manual Seats................................................1-3
Power Seats..................................................1-4
Power Lumbar...............................................1-5
Heated Seats.................................................1-5
Reclining Seatbacks........................................1-6
Head Restraints.............................................1-8
Seatback Latches...........................................1-8
Rear Seats.......................................................1-9
Rear Seat Operation (Extended Cab)................1-9
Rear Seat Operation (Crew Cab)......................1-9
Safety Belts...................................................1-10
Safety Belts: They Are for Everyone................1-10
Questions and Answers About Safety Belts......1-15
How to Wear Safety Belts Properly.................1-16
Driver Position..............................................1-16
Safety Belt Use During Pregnancy..................1-23
Right Front Passenger Position.......................1-24
Center Passenger Position.............................1-24
Rear Seat Passengers..................................1-26
Rear Safety Belt Comfort Guides for
Children and Small Adults..........................1-29
Safety Belt Extender.....................................1-31
Child Restraints.............................................1-32
Older Children..............................................1-32
Infants and Young Children............................1-34Child Restraint Systems.................................1-38
Where to Put the Restraint.............................1-41
Top Strap....................................................1-42
Top Strap Anchor Location.............................1-43
Lower Anchorages and Top Tethers for
Children (LATCH System)...........................1-47
Securing a Child Restraint Designed for
the LATCH System (Rear)..........................1-48
Securing a Child Restraint Designed for
the LATCH System (Front).........................1-49
Securing a Child Restraint in a Rear
Outside Seat Position................................1-53
Securing a Child Restraint in a Center
Rear Seat Position....................................1-56
Securing a Child Restraint in the Center
Front Seat Position....................................1-58
Securing a Child Restraint in the Right Front
Seat Position (Crew Cab)...........................1-58
Securing a Child Restraint in the Right Front
Seat Position (Regular and Extended Cab) . . .1-61
Air Bag Systems............................................1-67
Where Are the Air Bags?...............................1-68
When Should an Air Bag Inate?....................1-70
What Makes an Air Bag Inate?.....................1-71
How Does an Air Bag Restrain?.....................1-71
What Will You See After an Air Bag Inates? . . .1-72
Air Bag Off Switch........................................1-73
Section 1 Seats and Restraint Systems
1-1

2. After folding the seat cushion fully forward, pull the
seatback forward and fold the seatback down until it
is at. If the seatback cannot fold at because it
interferes with the cushion, try moving the front seat
forward and/or bringing the front seat more
upright. The lever at the base of the seat must be
turned rearward to release the seatback.
To return the seat to the passenger position do
the following:
1. Lift the seatback up and push it rearward all the way.
2. Lower the seat cushion until it latches into position.
3. Pull forward on the seatback and up on the seat
cushion to make sure the seat is securely in place.
Check to see that the buckles on the driver’s side
seatback are accessible to the outboard and center
occupant and are not under the seat cushions.Safety Belts
Safety Belts: They Are for Everyone
This part of the manual tells you how to use safety
belts properly. It also tells you some things you should
not do with safety belts.
{CAUTION:
Do not let anyone ride where he or she can not
wear a safety belt properly. If you are in a
crash and you are not wearing a safety belt,
your injuries can be much worse. You can hit
things inside the vehicle or be ejected from it.
You can be seriously injured or killed. In the
same crash, you might not be, if you are
buckled up. Always fasten your safety belt,
and check that your passengers’ belts are
fastened properly too.
1-10

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 1-31.
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.The lap part of the belt should be worn low and snug on
the hips, just touching the thighs. In a crash, this
applies force to the strong pelvic bones. And you’d be
less likely to slide under the lap belt. If you slid under it,
the belt would apply force at 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 safety belt locks if there’s a sudden stop or crash,
or if you pull the belt very quickly out of the retractor.
1-17

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 1-31.
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.
1-27

{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.
1-35

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

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.
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.
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.
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/or an air bag
off switch and the 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 inates. This is because the
back of the rear-facing child restraint would be
very close to the inating 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
and/or air bag off switch are designed to turn
off the passenger’s frontal air bag under
certain conditions, 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 transported in vehicles with a rear seat that
will accommodate a rear-facing child restraint,
whenever possible.
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.
Do not use child restraints in the center front seat
position. The restraints will not work properly.
1-41