When the truck died on me at work a couple months ago it just shut off like turning the key off,just cranked normal no start. After I had it towed home the first thing I did hoping to get lucky was swap the fuel pump relay from my great running but hit in the front parts truck,no luck so I installed a new fuel pump common problem with these trucks again no luck so my buddy stops by and says yank on the wire harness near the gas tank I'm looking at him like he's lost his mind,sure enough he starts tugging on the wires while I cranked the truck over, within seconds it's running, a couple days later I drive it to work and it doesn't start when I'm ready to head home,so I yank on the wire harness and it fires up and runs fine the 10 minute drive to the house that's how we decided to drop the tank and find a bad wire, the missing and hard starting came after the first fix. Thanks I'll keep checking but I really need to get ahold of someone with a scanner since I'm running blind here.