Chevrolet 2001 Impala Owner's Manual page 41

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.
For frontal air bags, inflation is determined by the angle
of the impact and how quickly the vehicle slows down
-
in frontal and near frontal impacts. For the side impact
air bag, inflation is determined by the location and
severity of the impact.
What makes an air bag inflate?
In an impact of sufficient severity, the air bag sensing
system detects that the vehicle is in a crash. For both
frontal and side impact air bags, the sensing system
triggers a release of gas from the inflator, which inflates
the air bag. The inflator, air bag and related hardware
are all part of the air bag modules inside the steering
wheel, instrument panel and the side of the driver's
seatback closest to the door.
How does an air bag restrain?
In moderate to severe frontal or near frontal collisions,
even belted occupants can contact the steering wheel
or the instrument panel. In moderate to severe side
collisions, even belted occupants can contact the inside
of the vehicle. 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 the frontal
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. The side impact air bag would not help you
in many types of collisions, including frontal or near
frontal collisions, rollovers, and rear impacts, primarily
because the occupant's motion is not toward that 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
the driver's and right front passenger's frontal air bags,
and only in moderate to severe side collisions for the
driver's side impact air bag.
What will you see after an air bag inflates?
After an air bag inflates, it quickly deflates, so
quickly that some people may not even realize the
air bag inflated. Some components of the air bag
--
module the steering wheel hub for the driver's air
bag, the instrument panel for the right front passenger's
bag, the side of the seatback closest to the door for
the driver's side impact air bag
short time.
-
frontal collisions for
--
will be hot for a
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