How do you change the right rear turn signal on a 2006 Buick Lacrosse?

To change the right rear turn signal on a 2006 Buick Lacrosse, first, open the trunk and locate the access panel on the right side. Remove the panel to access the tail light assembly. Twist the socket counterclockwise to release it, pull it out, and replace the old bulb with a new one. Finally, reinsert the socket, secure the access panel, and test the turn signal to ensure it's working.