The fuse block is located in the engine compartment on the driver sideof the vehicle. Chevrolet Express (2010 – 2015) – fuse box – engine compartment fuse block Mini fuse Chevrolet Express (2010 - 2015) - fuse box diagram - Auto Was this helpful? Chevrolet Fuse Box Diagrams • FuseCheck Chevrolet Avalanche (2003-2006) Fuse box diagram (fuse layout), location and assignment of fuses and relays Chevrolet Avalanche and Cadillac Escalade EXT (2003, 2004, 2005, 2006). Interior Fuse Box Location: 1996-2019 Chevrolet Express The video above shows how to replace blown fuses in the interior fuse box of your 2003 Chevrolet Express 2500 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 that has blown out.