1999 Buick LeSabre Owner's Manual - Page 273
1999 Buick LeSabre Manual
Page 273 highlights
yellowblue Trunk-Mounted Back-Up and Taillamps 2. Pull out the assembly. 1. Loosen and remove the eight fasteners (four per side) that hold the assembly in place. The assembly for both sides is one piece. The entire piece must be removed to replace any bulbs. 6-37