This acting up of what I think is a bad ground has not happened in two months.
Yesterday, 6 times in less than 60 miles. Recovery time may be coast to stop turn off ignition switch and then start up or coast to stop no start then wait 35 min than it will start.

When the switchpasses thru AC, it blows the fuse, thus vehicle will not start, and no cold air also before fuse blows.

My daughter drove the truck home turned it off went to crank it up a couple of hours later and it wont do anything but turn over. We have replaced the crankshaft sensor and fuel filter. Cannot figure out what tells the fuel injector to engage... Help anyone, Oh Yeah its a diesel..