GMC 2007 Envoy Denali Owner's Manual page 78

If the front of your vehicle goes straight into a
wall that does not move or deform, the threshold
level for the reduced deployment is about
9 to 16 mph (14 to 26 km/h), and the threshold
level for a full deployment is about 18 to 25 mph
(29 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.
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.
78
Frontal airbags (driver and right front passenger)
are not intended to inflate during vehicle
rollovers, rear impacts, or in many side impacts.
Your vehicle has seat position sensors which
enables 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.
Your vehicle may or may not have roof-mounted
airbags and a rollover sensor. See Airbag
System on page 71. These "rollover capable"
airbags are intended to inflate in moderate
to severe side crashes or during a rollover.
A roof-mounted airbag will inflate if the crash
severity is above the system's designed "threshold
level." The threshold level can vary with specific
vehicle design. Roof-mounted airbags are not
intended to inflate in frontal or near-frontal impacts,
or rear impacts. Both roof-mounted airbags will
deploy when either side of the vehicle is struck
or during a rollover.