2008 BUICK LACROSSE ECU

Front Seats......................................................1-2
Power Seats..................................................1-2
Power Lumbar...............................................1-3
Heated Seats.................................................1-3
Reclining Seatbacks........................................1-4
Head Restraints.............................................1-6
Center Seat...................................................1-7
Rear Seats.......................................................1-8
Split Folding Rear Seat...................................1-8
Safety Belts.....................................................1-9
Safety Belts: They Are for Everyone.................1-9
How to Wear Safety Belts Properly.................1-14
Lap-Shoulder Belt.........................................1-22
Safety Belt Use During Pregnancy..................1-27
Lap Belt......................................................1-28
Safety Belt Extender.....................................1-29
Child Restraints.............................................1-29
Older Children..............................................1-29
Infants and Young Children............................1-33
Child Restraint Systems.................................1-37
Where to Put the Restraint.............................1-39Lower Anchors and Tethers for
Children (LATCH)......................................1-41
Securing a Child Restraint in a
Rear Seat Position....................................1-47
Securing a Child Restraint in the Center
Front Seat Position....................................1-50
Securing a Child Restraint in the Right
Front Seat Position....................................1-50
Airbag System...............................................1-54
Where Are the Airbags?................................1-57
When Should an Airbag Inate?.....................1-59
What Makes an Airbag Inate?.......................1-60
How Does an Airbag Restrain?.......................1-60
What Will You See After an Airbag Inates?.....1-60
Passenger Sensing System............................1-62
Servicing Your Airbag-Equipped Vehicle...........1-66
Adding Equipment to Your Airbag-Equipped
Vehicle....................................................1-67
Restraint System Check..................................1-68
Checking the Restraint Systems......................1-68
Replacing Restraint System Parts After
a Crash...................................................1-69
Section 1 Seats and Restraint Systems
1-1

Lap-Shoulder Belt
All seating positions in your vehicle have a lap-shoulder
except for the center front passenger position, if your
vehicle has one, which has a lap belt. SeeLap Belt on
page 1-28for more information.
Here is how to wear a lap-shoulder belt properly.
1. Adjust the seat, if the seat is adjustable, so you can
sit up straight. To see how, see “Seats” in the Index.
2. 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.
If you ever pull the shoulder portion of a passenger
belt out all the way, you may engage the child
restraint locking feature. If this happens, just let
the belt go back all the way and start again.3. Push the latch plate into the buckle until it clicks.
If you nd that the latch plate will not go fully into
the buckle, see if you are using the correct buckle.
Pull up on the latch plate to make sure it is
secure. 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 necessary.
1-22

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.
Child Restraints
Older Children
Older children who have outgrown booster seats should
wear the vehicle’s safety belts.
The manufacturer’s instructions that come
with the booster seat, state the weight and
height limitations for that booster.
1-29

{CAUTION:
People should never hold an infant in their
arms while riding in a vehicle. An infant does
not weigh much — until a crash. During a
crash an infant 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) infant
will suddenly become a 240 lb (110 kg) force
on a person’s arms. An infant should be
secured in an appropriate restraint.
1-34

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 should always be secured in
appropriate infant restraints.
1-36

{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 should always be secured in
appropriate child restraints.
Child Restraint Systems
A rear-facing infant
seat (A) 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.
A forward-facing child
seat (B) provides restraint
for the child’s body
with the harness.
1-37

A booster seat (C-D) is a child restraint designed to
improve the t of the vehicle’s safety belt system.
A booster seat can also help a child to see out the
window.
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 1-41for more information. A child can
be endangered in a crash if the child restraint is not
properly secured in the vehicle.
1-38

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.
Securing the Child Within the Child
Restraint
{CAUTION:
A child can be seriously injured or killed in a
crash if the child is not properly secured in
the child restraint. Because there are different
systems, it is important to refer to the
instructions that come with the restraint. Make
sure the child is properly secured, following
the instructions that came with that restraint.
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 recommend that children and child restraints be
secured in a rear seat, including: an infant or a child
riding in a rear-facing child restraint; a child riding in
a forward-facing child seat; an older child riding in a
booster seat; and children, who are large enough,
using safety belts.
1-39