What makes an airbag inflate, What makes an airbag, Inflate? -32 – GMC 2011 Canyon User Manual
Page 76

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GMC Canyon Owner Manual - 2011
3-32
Seats and Restraints
Frontal airbags are not intended to
inflate during vehicle rollovers, rear
impacts, or in many side impacts.
Your vehicle has seat position
sensors which enables the sensing
system to monitor the position of
the driver's seat and the right front
passenger's seat. Seat position
sensors provide information that is
used to determine if the airbags
should deploy at a reduced level or
at full deployment.
In addition, your vehicle has
dual-stage frontal airbags.
Dual-stage airbags adjust the
restraint according to crash severity.
Your vehicle has electronic frontal
sensors, which help the sensing
system distinguish between a
moderate frontal impact and a more
severe frontal impact. For moderate
frontal impacts, dual-stage airbags
inflate at a level less than full
deployment. For more severe frontal
impacts, full deployment occurs.
Your vehicle may or may not have
roof-rail airbags. See Airbag System
on page 3‑28. Roof-rail airbags are
intended to inflate in moderate to
severe side crashes. Roof-rail
airbags will inflate if the crash
severity is above the system's
designed threshold level. The
threshold level can vary with
specific vehicle design.
Roof-rail airbags are not intended to
inflate in frontal impacts, near-frontal
impacts, rollovers, or rear impacts.
Both roof-rail airbags will deploy
when either side of the vehicle is
struck.
In any particular crash, no one
can say whether an airbag should
have inflated simply because of the
damage to a vehicle or because
of what the repair costs were.
For frontal airbags, inflation is
determined by what the vehicle hits,
the angle of the impact, and how
quickly the vehicle slows down. For
roof-rail airbags, deployment is
determined by the location and
severity of the side impact.
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 and deploy. The inflator,
the airbag, and related hardware are
all part of the airbag module.
Frontal airbag modules are located
inside the steering wheel and
instrument panel. For vehicles with
seat‐mounted side impact airbags,
there are airbags modules in the
side of the front seatbacks closest
to the door. For vehicles with
roof-rail airbags, there are airbag
modules in the ceiling of the vehicle,
near the side windows that have
occupant seating positions.