Buick 2004 Park Avenue Owner's Manual page 59

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