Chevrolet 2005 Uplander Owner's Manual page 84

If your vehicle has a side impact airbag for the right
front passenger and/or the second row captain's chairs
(if equipped), it is in the side of the seatback closest
to the door.
1-78
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.