Where is the fuse box located in a 1988 Buick LeSabre 1988 Buick LeSabre fuse panel (25 slots) is located on left side of dash with 2 spring loaded thumb screws around corner of dash next to upper door. Push in and turn left. This releases the dash panel to left of steering column for access to fuses. A second Fuse and Relay panel is under dash behind glove box on far right passenger side. Mel SOLVED: Need fuse box diagram for 1988 Buick lesabre - Fixya Do you an Owner's Manual to look at. There are two fuse boxes on the 2000 Buick LeSabre. One is under the hood an the passenger-side at the front and the other is under the back seat. The Owners manual has fuse diagrams on pages 6-62 and 6-63 for the engine compartment box and pages 6-66 and 6-67 for the under seat box. Where is fuse box for a 1990 Buick LeSabre - Answers Answer The fuel pump fuse on a 1990 buick lesabre is on the passenger's side, under the glove box. When you look under the glove box, you will see a black cover under the dash that stretches across 3/4 of the car. (There is another cover under the steering wheel. Remove the passenger side cover.