Hey guys, so i have been having a intermittent tcm problem, getting u0101 (lost comm with tcm). When it first started a couple months ago i replaced the ignition switch and the truck was perfect for about 2 weeks then started to give intermittent u0101 again. During the past month and a half i have replaced the nsbu and checked all the harnesses multiple times, ripped my entire dash apart and cant find any lose connections or damaged wire. I currently have 12v on and 14v running to ign 0 fuse inside the cabs fuse-box and have 12v at the pcm b fuse under the hoods fuse box. when testing the tcm plugs i was getting no power to the pink ign 0 wire pin out.. ground and constant battery power tested good. if i jump the pink ign power wire on the tcm harness everything works fine so i ended up putting in a switch to feed the ign power to the tcm until i can figure out the problem. I was thinking maybe the ignition switch died again somehow or its a bcm issue. I have another LLY that i can start stealing parts from to test but its the old mans truck so i figured i would try to get some input from you guys first, Thanks in advance.