Chevrolet 2009 Silverado 1500 Pickup Spezifikationen Seite 84

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Frontal airbags may inflate at different crash speeds.
For example:
If the vehicle hits a stationary object, the airbags
could inflate at a different crash speed than if the
vehicle hits a moving object.
If the vehicle hits an object that deforms, the
airbags could inflate at a different crash speed than
if the vehicle hits an object that does not deform.
If the vehicle hits a narrow object (like a pole),
the airbags could inflate at a different crash speed
than if the vehicle hits a wide object (like a wall).
If the vehicle goes into an object at an angle, the
airbags could inflate at a different crash speed than
if the vehicle goes straight into the object.
Thresholds can also vary with specific vehicle design.
Frontal airbags are not intended to inflate during vehicle
rollovers, rear impacts, or in many side impacts.
If the GVWR (Gross Vehicle Weight Rating) of your
vehicle is 8,500 lb (3 855 kg) or above, your vehicle
has single stage airbags. If the GVWR is below 8,500 lb
(3 855 kg) then your vehicle has dual stage airbags.
You can find the GVWR on the certification label on the
rear edge of the driver’s door. See Loading the Vehicle
on page 4-32 for more information.
In addition, the vehicle may have dual-stage frontal
airbags. Dual-stage airbags adjust the restraint according
to crash severity. The vehicle has electronic frontal
sensors, which help the sensing system distinguish
between a moderate frontal impact and a more severe
frontal impact. For moderate frontal impacts, dual-stage
airbags inflate at a level less than full deployment.
For more severe frontal impacts, full deployment occurs.
Vehicles with dual stage airbags also have seat position
sensors which enable the sensing system to monitor the
position of the driver seat (all models) and the right front
passenger seat (light-duty regular cab and light-duty
extended cab models only). The seat position sensor
provides information that is used to determine if the
airbags should deploy at a reduced level or at full
deployment.
The vehicle may or may not have roof-rail airbags.
See Airbag System on page 1-73. Roof-rail airbags are
intended to inflate in moderate to severe side crashes.
In addition, these roof-rail airbags are intended to inflate
during a rollover or in a severe frontal impact. Roof-rail
airbags will inflate if the crash severity is above the
system’s designed threshold level. The threshold
level can vary with specific vehicle design.
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