Chevrolet 2005 Colorado, Owner'S Manual

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If your vehicle has side impact airbags, it has electronic
side sensors. The 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.
Your vehicle has seat position sensors which enable 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 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 or near-frontal impacts. For side
impact airbags, inflation is determined by the location
and severity of the impact.
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, airbag, and related hardware are
all part of the airbag modules inside the steering wheel
and in the instrument panel in front of the right front
passenger. For vehicles with side impact airbags, the
airbag modules are located in the ceiling of the vehicle,
near the side windows.
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. The airbag supplements the protection
provided by safety belts. Airbags distribute the force of
the impact more evenly over the occupant’s upper
body, stopping the occupant more gradually. But the
frontal airbags would not help you in many types
of collisions, including rollovers, rear impacts, and many
side impacts, primarily because an occupant’s motion
is not toward the airbag.
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