Just a short story here that may help someone else. Some may already be familiar with this, but I wasn't. I started my truck and turned it around in the driveway yesterday, backed it up, then put it in park and left it idling. I suddenly stopped running. I couldn't get it going-cranked, but no gas. Could hear the fuel pump. Thought maybe the fuel filter had clogged up. Changed it. Nothing. Got into the passenger wheel well fuse box area and found the fuel shut-off tripped (I think-pushed the button and it seemed to reset), weird. Still nothing. Checked further and found the 20 amp injector fuse blown. Replaced it, started right up. don't understand why this happened, but happy it was a simple, cheap fix! Hope this helps somebody else before they try a lot of other stuff.