Interior Fuse Box Location: 2000-2005 Buick LeSabre 2003 Click to view0:17The video above shows how to replace blown fuses in the interior fuse box of your 2003 Buick LeSabre in addition to the fuse panel diagram location. Electrical components such as your map light, radio, heated seats, high beams, power windows all have fuses and if they suddenly stop working, chances are you have a fuse Buick LeSabre (2003 - 2004) - fuse box diagram - Auto Genius Jan 22, 2017Buick LeSabre (2003 – 2004) – fuse box diagram. Year of production: 2003, 2004. Engine Compartment Fuse Block. The engine compartment fuse block is located near the front on the passenger’s side of the vehicle.