1996 BUICK CENTURY gas type

When should an air bag inflate?
The air bag is designed to inflate in moderate to severe
frontal or near-frontal crashes. The air bag will inflate
only if the impact speed is above the system’s designed
“threshold level.’’
If your vehicle goes straight into a
wall that doesn’t move or deform, the threshold level is
about
9 to 15 mph (14 to 24 km/h). The threshold level
can vary, however, with specific vehicle design,
so that
it can be somewhat above or below this range.
If your
vehicle strikes something that will move or deform, such
as a parked car, the threshold level will be higher. The
air bag is not designed to inflate in rollovers, side
impacts or rear impacts, because inflation would not
help the occupant.
In any particular crash, no one can say whether an air
bag should have inflated simply because of the damage
to a vehicle or because of what the repair costs were.
Inflation is determined by the angle of the impact and
the vehicle’s deceleration. Vehicle damage is only one
indication of this.
What makes an air bag inflate?
In a frontal or near-frontal impact of sufficient severity,
the air bag sensing system detects that the vehicle is
suddenly stopping as a result of a crash. The sensing
system triggers a chemical reaction of the sodium azide
sealed in the inflator. The reaction produces nitrogen
gas, which inflates the air bag. The inflator, air bag and
related hardware are all part of the air bag module
packed inside the steering wheel.
How does an air bag restrain?
In moderate to severe frontal or near-frontal collisions,
even belted occupants can contact the steering wheel.
The air bag supplements the protection provided by
safety belts. Air bags distribute the force of the impact
more evenly over the occupant’s upper body, stopping
the occupant more gradually. But air bags would not
help you in many types
of collisions, including
rollovers, rear impacts and side impacts, primarily
because an occupant’s motion
is not toward the air bag.
Air bags should never be regarded as anything more
than a supplement to safety belts, and then only in
moderate to severe frontal or near-frontal collisions.
1-23
ProCarManuals.com

If your vehicle is certified to meet California Emission
Standards (indicated on the underhood tune-up label), it
is designed
to operate on fuels that meet California
specifications. If such fuels are not available
in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal
specifications, but emission control system performance
may be affected.
The malfunction indicator lamp on
your instrument panel may turn on and/or your vehicle
may fail
a smog-check test. If this occurs, return to your
authorized Buick dealer for diagnosis to determine the
cause of failure. In the event it is determined that the
cause of the condition is the type
of fuels used, repairs
may not be covered by your warranty.
In Canada, some gasolines contain an octane enhancing
additive called MMT.
If such fuels are used, your
emission control system performance may be affected.
The malfunction indicator lamp on your instrument
panel may also turn on. If this occurs, return to your
authorized Buick dealer for service.
To provide cleaner air, all gasolines are now required to
contain additives that will help prevent deposits from
forming
in your engine and fuel system, allowing your
emission control system to function properly. Therefore,
you should not have to add anything to the fuel. In
addition, gasolines containing oxygenates, such
as ethers
and ethanol, and reformulated gasolines may be
available
in your area to help clean the air. General
Motors recommends that you use these gasolines
if they
comply with the specifications described earlier.
I NOTICE:
Your vehicle was not designed for fuel that
contains methanol. Don’t use it. It can corrode
metal parts in your fuel system and also damage
plastic and rubber parts. That damage wouldn’t
be covered under your warranty.
6-3
ProCarManuals.com

Bulb Replacement
Halpqen BIJhc
Headlamp Bulb Replacement
For the type of bulb, see “Replacement Bulbs” in
the Index.
1 A CAUTION:
Halogen bulb: ave pressu zed gas inside and
can burst if you drop or scratch the bulb.
You or
others could be injured. Take special care when
handling and disposing
of halogen bulbs.
1. Turn the bulb assembly counterclockwise one-sixth
of a turn, pressing in firmly, until the flanges align
with the slots in the retainer ring.
2. Pull out the bulb assembly.
3. Disconnect the bulb base from the wiring harness by
lifting the plastic locking tab.
6-33
ProCarManuals.com

Appearance Care
Remember, cleaning products can be hazardous. Some
are toxic. Others can burst into flame if you strike a
match or get them on a hot part
of the vehicle. Some are
dangerous
if you breathe their fumes in a closed space.
When you use anything from a container to clean your
Buick, be sure to follow the manufacturer’s warnings
and instructions. And always open your doors or
windows when you’re cleaning the inside.
Never use these to clean your vehicle:
0 Gasoline
Benzene
Naphtha
0 Carbon Tetrachloride
Acetone
0 Paint Thinner
0 Turpentine
0 Lacquer Thinner
0 Nail Polish Remover
They can all be hazardous
-- some more than
others
-- and they can all damage your vehicle, too. Don’t
use any of these unless this manual says
you can.
In many uses, these will damage your vehicle:
Alcohol
Laundry Soap
0 Bleach
0 Reducing Agents
Cleaning the Inside of Your Buick
Use a vacuum cleaner often to get rid of dust and loose
dirt. Wipe vinyl or leather with a clean, damp cloth.
Your Buick dealer has two GM cleaners, a solvent-type
spot lifter and a foam-type powdered cleaner. They will
clean normal spots and stains very well.
Do not use
them on vinyl or leather.
Here are some cleaning tips:
0 Always read the instructions on the cleaner label.
Clean up stains as soon as you can -- before they set.
Use a clean cloth or sponge, and change to a
clean area often. A soft brush may be used if stains
are stubborn.
Use solvent-type cleaners in a well-ventilated area
only. If you use them, don’t saturate the stained area.
6-46
ProCarManuals.com