What Makes An Airbag; Inflate; How Does An Airbag; Restrain - GMC Savana 2016 Owner's Manual

58 Seats and Restraints
It depends largely on what you hit,
the direction of the impact, and how
quickly the vehicle slows down.
Frontal airbags may inflate at
different crash speeds depending on
whether the vehicle hits an object
straight on or at an angle, and
whether the object is fixed or
moving, rigid or deformable, narrow
or wide.
Frontal airbags are not intended to
inflate during vehicle rollovers, rear
impacts, or in many side impacts.
Seat-mounted side impact airbags,
if equipped, are designed to inflate
in moderate to severe side crashes
depending on the location of the
impact. Seat-mounted side impact
airbags are not designed to inflate in
frontal impacts, near-frontal impacts,
rollovers, or rear impacts.
A seat-mounted side impact airbag
is intended to inflate on the side of
the vehicle that is struck.
The vehicle may or may not be
equipped with roof-rail airbags.
Roof-rail airbags are designed to
inflate in moderate to severe side
crashes depending on the location
of the impact. In addition, these
roof-rail airbags are designed to
inflate during a rollover. Roof-rail
airbags are not designed to inflate in
frontal, near-frontal, or rear impacts.
All roof-rail airbags will inflate when
either side of the vehicle is struck or
if the sensing system predicts that
the vehicle is about to roll over on
its side.
In any particular crash, no one can
say whether an airbag should have
inflated simply because of the
vehicle damage or repair costs.

What Makes an Airbag

Inflate?

In a deployment event, the sensing
system sends an electrical signal
triggering a release of gas from the
inflator. Gas from the inflator fills the
airbag causing the bag to break out
of the cover. The inflator, the airbag,
and related hardware are all part of
the airbag module.
For airbag locations, see Where Are
the Airbags? 0 55.

How Does an Airbag

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.
Airbags supplement the protection
provided by safety belts by
distributing the force of the impact
more evenly over the
occupant's body.
Rollover capable roof-rail airbags
are designed to help contain the
head and chest of occupants in the
outboard seating positions in the
first, second, and third rows,
if equipped. The rollover capable
roof-rail airbags are designed to
help reduce the risk of full or partial
ejection in rollover events, although
no system can prevent all such
ejections.
But airbags would not help in many
types of collisions, primarily
because the occupant's motion is