Where is the fusebox on a 2004 chevy workhorse - Fixya Mar 19, 2013where is the fusebox on a 2004 chevy workhorse fuse box - Chevrolet C3500 question. Search Fixya Where is the fusebox on a 2004 chevy workhorse. Fuse box Posted by Anonymous on Mar 19, 2013. I need to know which fuse in the fuse box on a 2004 2004 workhorse fusebox and wiring diagram - Fixya 2004 workhorse fusebox and wiring diagram - Cars & Trucks. Posted by Anonymous on Feb 16, 2012. Want Answer 0. 2004 PONTIAC GRAND PRIX FUSE BOX DIAGRAM I NEED TO FIND THE MALL PRG FUSE SO I CAN RESET MY KEYLESS ENTERY REMOTE. The diagram is on the fuse box cover or lid (depending on which fusebox, cabin or engine compartment.