What makes an airbag inflate, What makes an airbag inflate? -55 – GM Chevrolet Avalanche User Manual

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Your vehicle may or may not have a side impact airbag.
See Airbag System on page 1-49. Side impact airbags
are designed to inflate in moderate to severe side
crashes. A side impact airbag will inflate if the crash
severity is above the system’s designed “threshold
level.” The threshold level can vary with specific vehicle
design. Side impact airbags are not designed to
inflate in frontal or near-frontal impacts, rollovers or rear
impacts, because inflation would not likely help the
occupant. A side impact airbag will only deploy on the
side of the vehicle that 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
the angle of the impact and how quickly the vehicle
slows down in frontal and near-frontal impacts. For side
impact airbags, inflation is determined by the location
and severity of the impact.

The airbag system is designed to work properly under a
wide range of conditions, including off-road usage.
Observe safe driving speeds, especially on rough
terrain. As always, wear your safety belt. See Off-Road
Driving with Your Four-Wheel-Drive Vehicle
on
page 4-18
for tips on off-road driving.

What Makes an Airbag Inflate?

In an impact of sufficient severity, the airbag sensing
system detects that the vehicle is in a crash. For both
frontal and side impact airbags, the sensing system
triggers a release of gas from the inflator, which inflates
the airbag. The inflator, the airbag and related hardware
are all part of the airbag modules. Frontal airbag modules
are located inside the steering wheel and instrument
panel. For vehicles with side impact airbags, the airbag
modules are located in the seatback closest to the
driver’s and/or right front passenger’s door.

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