1997 Buick Park Avenue Owner's Manual - Page 306

6. Remove the bulb socket assembly by turning the socket one-quarter of a turn counterclockwise and pulling it out. " . :. 7. Once the socket has been removed, pull the bulb straight out to remove it from the socket. Turn lamps, stoplamps, and back-up bulbs are located behind the taillamp assembly along the trunk lid. 8. Reverse the above steps to replace the taillamp assembly. 6-42