I just got my new tires today, 265/75 Nitto Terra Grapplers. I was going to reprogram my PPE for the tire size so I did it at the shop. I was thinking man this thing is taking a long time to load the tune. The PPE manual said unplug and start the truck for a few minutes. The truck would not start so it said to return to stock in the diagnostic menu. I try that, nothing happens. I'm like, WTF!! Then it hit me, I was in ACC not the run position, derrr. I just reset the truck to stock, and I will try reloading the tune when I have time. I should start sleeping more maybe. I thought I broke it for sure, I tied up the bay at the shop for a couple hours though. 
