Buick 1998 Century Owner's Manual page 295

3. Remove the bulb by turning it one-quarter of a turn
right to left.
4. Place the new bulb into the bulb socket.
Tail/Stop/Turn Signal Lamp
1. Remove the plastic wing nuts (A). (Pliers may be
required to remove the wing nuts.)
A A
B
5. Turn the bulb one-quarter of a turn to the right
to replace.
6. Close the trunk.
2. Pull the taillamp housing away from the body of the
vehicle (B).
6-35