Hummer 2003 H2 Owner's Manual page 39

CAUTION:
If something is between an occupant and an
air bag, the bag might not inflate properly or it
might force the object into that person causing
severe injury or even death. The path of an
inflating air bag must be kept clear. Don't put
anything between an occupant and an air bag,
and don't attach or put anything on the steering
wheel hub or on or near any other air bag
covering.
When should an air bag inflate?
An air bag is designed to inflate in a moderate to severe
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frontal or near frontal crash. The air bag will inflate
only if the impact speed is above the system's designed
"threshold level."
If your vehicle goes straight into a wall that doesn't
move or deform, the threshold level is about 9 to
17 mph (14 to 27 km/h). The threshold level can vary,
however, with specific vehicle design, so that it can be
somewhat above or below this range. If your vehicle
strikes something that will move or deform, such as a
parked car, the threshold level will be higher.
The air bag is not designed to inflate in rollovers, rear
impacts, or in many side impacts because inflation
would not help the occupant.
In any particular crash, no one can say whether an air
bag should have inflated simply because of the damage
to a vehicle or because of what the repair costs were.
Inflation is determined by the angle of the impact and
how quickly the vehicle slows down in frontal or
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near frontal impacts.
The air bag system is designed to work properly under
a wide range of conditions, including off
Observe safe driving speeds, especially on rough terrain.
As always, wear your safety belt. See "Off
Driving" in the Index for more tips on off
What makes an air bag inflate?
In an impact of sufficient severity, the air bag sensing
system detects that the vehicle is in a crash. The sensing
system triggers a release of gas from the inflator, which
inflates the air bag. The inflator, air bag and related
hardware are all part of the air bag modules inside the
steering wheel and in the instrument panel in front of the
right front passenger.
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road usage.
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Road
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road driving.
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