Interior Fuse Box Location: 2000-2005 Buick LeSabre 2000 Click to view0:17Some Buicks have multiple interior fuse boxes including in the trunk - the video above will show you where the interior fuse box of your 2000 LeSabre is located. If your LeSabre has many options like a sunroof, navigation, heated seats, etc, the more fuses it has. Buick LeSabre Questions - where is the fuse box for 2000 wwwurus›Questions›Buick›LeSabreThe 2000 Buick LaSabre has two fuseboxes: (1) under the hood, on the passenger side, and (2) under the back seat, on the driver's side. The rear seat-cushion comes up in front and pulls forward. The car's battery is under that cushion on the passenger side and the fuse box is on the driver's side.