Chevrolet 1999 Express Van Specifications download pdf (Page 67)

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 roof-rail

airbags, there are airbag modules in the ceiling of the

vehicle, near the side windows for the ﬁrst, second, and

third rows (if equipped). See Where Are the Airbags?

on page 1-58 for more information.

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. Frontal airbags distribute the force of the

impact more evenly over the occupant’s upper body,

stopping the occupant more gradually. Roof-rail airbags

distribute the force of the impact more evenly over

the occupant’s upper 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 not toward

those airbags. See When Should an Airbag Inﬂate? on

page 1-61 for more information.

Airbags should never be regarded as anything more

than a supplement to safety belts.

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Chevrolet 1999 Express Van Specifications Page 67