Buick 2002 Regal Owner's Manual page 296

Back-Up Lamps
6-42
1. Open the trunk lid halfway.
2. Remove the seven wing nuts (A) from the applique.
3. Remove the applique from the trunk lid.
4. Twist and pull the bulb socket (B) from the trunk
lid applique.
5. Twist and/or pull the old bulb from the bulb socket.
6. Twist and/or push the new bulb into the lamp socket.
7. Twist and/or push the lamp socket into the trunk
lid applique.
8. Reverse steps 1 through 3 to reinstall the trunk
lid applique.
9. Close the trunk lid.