2003 Chevrolet Impala Owner's Manual - Page 63

2003 Chevrolet Impala Manual

Page 63 highlights

When Should an Air Bag Inflate? The driver's and right front passenger's frontal air bags are designed to inflate in moderate to severe frontal or near-frontal crashes. But they are designed to inflate only if the impact speed is above the system's designed "threshold level". In addition, your vehicle has "dual stage" frontal air bags, which adjust the amount of restraint according to crash severity. For moderate frontal impacts, these air bags inflate at a level less than full deployment. For more severe frontal impacts, full deployment occurs. If the front of your vehicle goes straight into a wall that doesn't move or deform, the threshold level for the reduced deployment is about 12 to 18 mph (19 to 29 km/h), and the threshold level for a full deployment is about 18 to 24 mph (29 to 38.5 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 driver's and right front passenger's frontal air bags are not designed to inflate in rollovers, rear impacts, or in many side impacts because inflation would not help the occupant. Your vehicle may or may not have a driver side air bag. See Air Bag Systems in the Index. A driver 's side impact air bag is designed to inflate in moderate to severe side crashes involving the driver's door. A side impact air bag will inflate if the crash severity is above the system's designed "threshold level." The threshold level can vary with specific vehicle design. A driver's side impact air bag is not designed to inflate in frontal or near-frontal impacts, rollovers 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. 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 side impact air bags, inflation is determined by the location and severity of the impact. 1-56

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When
Should
an
Air
Bag Inflate?
The driver’s and right front passenger’s frontal air bags
are designed to inflate in moderate to severe frontal
or near-frontal crashes. But they are designed to inflate
only
if
the impact speed is above the system’s
designed “threshold level”.
In
addition, your vehicle has “dual stage” frontal air
bags, which adjust the amount of restraint according to
crash severity.
For
moderate frontal impacts, these
air bags inflate at a level less than full deployment.
For more severe frontal impacts, full deployment occurs.
If the front of your vehicle goes straight into a wall
that doesn’t
move
or deform, the threshold level for
the reduced
deployment is about 12 to 18 mph (19 to
29 km/h), and the threshold level for a full deployment is
about 18
to 24 mph (29 to 38.5 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 driver’s and
right front passenger’s frontal
air bags are not designed to inflate in rollovers,
rear
impacts, or in many
side
impacts
because
inflation
would not help the occupant.
Your vehicle may or may not have
a
driver
side
air
bag.
See
Air Bag Systems in the Index.
A
driver
’s
side
impact air bag is designed to inflate in moderate
to severe side crashes involving the driver’s
door.
A
side impact air bag
will inflate
if
the
crash
severity
is above the system’s designed “threshold
level.”
The
threshold level can
vary
with
specific
vehicle
design.
A
driver’s side impact air
bag is not
designed
to inflate
in frontal or near-frontal impacts,
rollovers
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. 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 side impact air bags, inflation is determined
by
the location and severity of the
impact.
1-56