Geo 1995 Prizm Owner's Manual page 230

Back-up Lamps
5.
6.
7.
8.
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.
Turn the bulb socket counterclockwise and pull it
out.
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.
Reverse the steps with a new bulb.
1.
2.
3.
4.
5.
6.
Open the trunk.
Remove the trim on the trunk lid (if your vehicle is
so equipped).
Remove the screw from the back-up lamp.
Pull the bulb housing assembly through the opening
in the trunk lid.
Push the bulb in, turn it counterclockwise and pull it out.
Reverse the steps with a new bulb.
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