Geo Prizm 1997 Owner's Manual page 258

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4. Remove the nut from the stud near the rear corner of
the trunk.
5. Remove the rear combination lamp assembly. There
is a snap-in connector in the assembly, so you may
have to pull carefully on the inside edge of the
assembly to remove it.
6. Turn the bulb socket counterclockwise and pull it out.
7. For the taiVstop or turn signal lamps, push the bulb
in, turn it counterclockwise and pull it out. For the
sidemarker bulb, pull it straight out.
8. Reverse the steps with a new bulb.
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