Fuse box Chevrolet Cobalt - fusesdiagram For Chevrolet Cobalt 2004, 2005, 2006, 2007, 2008, 2009, 2010 model year. Fuse box in engine compartment. fuse box location. The engine compartment fuse block is Chevrolet Cobalt - 2007 Fuse Box Diagram Cobalt - 2007 Fuse Box; If the engine still does not start, and the key. appears to be undamaged, try another ignition. key. At this time, you may also want to check the.