Chevrolet 2004 Blazer Specifications download pdf (Page 61)

In addition, your vehicle has “dual stage” frontal air

bags, which adjust the amount of restraint according to

crash severity. For moderate frontal impacts, these air

bags inﬂate at a level less than full deployment. For more

severe frontal impacts, full deployment occurs. If the front

of your vehicle goes straight into a wall that doesn’t move

or deform, the threshold level for the reduced deployment

is about 12 to 16 mph (19 to 26 km/h), and the threshold

level for a full deployment is about 16 to 25 mph (26 to

40 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 driver’s and right front passenger’s frontal

air bags are not designed to inﬂate in rollovers, rear

impacts, or in many side impacts because inﬂation

would not help the occupant.

Your vehicle may or may not have a side impact air

bag. See Air Bag Systems in the Index. Side impact air

bags are designed to inﬂate in moderate to severe

side crashes. A side impact air bag 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 air bags are

not designed to inﬂate in frontal or near-frontal impacts,

rollovers or rear impacts, because inﬂation would not

help the occupant. A side impact air bag will only deploy

on the side of the vehicle that is struck.

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.

For frontal air bags, 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

air bags, inﬂation is determined by the location

and severity of the impact.

The air bag 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 4-15 for tips on off-road driving.

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. For

both frontal and side impact air bags, the sensing

system triggers a release of gas from the inﬂator, which

inﬂates the air bag. The inﬂator, the air bag and

related hardware are all part of the air bag modules.

Frontal air bag modules are located inside the steering

wheel and instrument panel. For vehicles with side

impact air bags, the air bag modules are located in the

seatback closest to the driver’s and/or right front

passenger’s door.

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Chevrolet 2004 Blazer Specifications Page 61

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