GMC Yukon Denali 2006 Manual page 85

If your vehicle has one, the right front passenger's side
impact airbag is in the side of the passenger's
seatback closest to the door.
CAUTION:
{
If something is between an occupant and an
airbag, the airbag might not inflate properly or
it might force the object into that person
causing severe injury or even death. The path
of an inflating airbag must be kept clear. Do
not put anything between an occupant and an
airbag, and do not attach or put anything on
the steering wheel hub or on or near any other
airbag covering. Do not let seat covers block
the inflation path of a side impact airbag.
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