1998 Buick Riviera Owner's Manual - Page 278

TaillampdRear Thrn SignaVBack-Up Lamps The following instructions explain how change to each bulb. 3. Pull the taillamp assembly away from the vehicle carefully, to avoid scratching the paint. taillamp The has safety straps help you hold assembly while to the replacing the bulbs. 1. Remove the bulb socket assembly by squeezing the plastic lock and turning one-quarter of a turn to it the left. 6-37