I have a 2013 v6 Camaro with no mods, last week battery went dead put new battery on it, fired it up went down the road fine for about 1/2 Mile and then it said reducing engine power and coasted to a stop, dealership found that it ECM fuse was blown replaced it kept blowing fuses replace the ECM no it's misfiring going to p300 code and keeps blowing said fuse.... I'm at a loss... Any ideas?