Pontiac 1998 Firebird Owner's Manual page 238

Find
the plastic screw heads in the t r i m panel over the
spare tire. (See "Compact Spare Tire" later in this
section for more information about the compact spare.)
Use a coin or a key to turn the screw heads until the
slots point front and back. Gently lift the trim panel and
move it out of the way.
If you have speakers in the trim panel, you may have to
disconnect the wire from the speaker. The speaker wire
may be long enough to remove the trim panel without
disconnecting
the
wire.
To remove the jack
and
wheel
wrench, loosen
and
remove the bolt and remove the plastic cover.
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