Went on a trail through the woods with a buddy. Came to some mud, ended up stuck but got pulled out, all is well. What I did notice is about 3/4 in (until I got stuck), all my interior electrical started going nuts. Dome lights, windows, memory seat recall all quit working except for the heater controls. Right side gauges (oil pressure, battery voltage, fuel and temperature) also stopped working, but speedo and tach still works fine. I've cleaned engine and body grounds, took every single fuse and relay out of the fuse box under the hood, cleaned terminals and checked fuses, cleaned the 2 posts under the fuse box cover and no difference. Ran a booster cable from negative terminal on battery to the frame, and then to the engine (checking grounds) and no difference. Here's a link to a video I recorded of what the truck is doing. It didn't happen in the video, but sometimes the radio will turn off and the security light on it starts blinking. Any ideas??

 

Thought I would post an update. Scanned every module when I had communication and every one had one code in common, which was class 2 data link high.