Chevrolet 2000 Cavalier Owner's Manual page 284

Taillamps and Rear Turn Signal Lamps
To replace a bulb, do the following:
1. Remove the fastener which holds down the trunk
trim. On vehicles without a convenience net, pry the
fastener loose. On vehicles with a convenience net,
remove the net and unscrew the fastener. Then pull
down the trunk trim.
2. Remove the assembly by turning it one
turn counterclockwise.
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3. To remove the bulb, pull it out.
4. Push in a new bulb.
5. Reverse all steps to reinstall the taillamp assembly.
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