Buick 1999 Riviera Owner's Manual page 30

The right front passenger's air bag is in the instrument
panel on the passenger's side.
1-24
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. 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.
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