I have a 2013 Equinox with the 2.4 and has 111,000 miles on it came out the other day and it cranks over but will not start.Had it towed in has no codes has good compression and fuel. Was told that there is 12 volts on a reference wire and shouldn't be. They replaced ignition switch and that didn't solve it now they are telling me fuse box is bad but their not positive. Is this possible? I don't want to sink another 300 into this thing and still have the issue any help is appreciated thanks in advance.