Thanks for your help. When I got the truck, it had all kinds of electrical issues, so I got a used ECM/PCM? And the guy reprogrammed both, so I have a spare I can put in the truck. Today, before I saw this post, I was going over the electrical connections and wires with a mechanical friend. We were in the truck, codes cleared, and I hit the ac compressor switch. That caused an immediate u0107 and reduced power. I cleared the codes, and it all ran good for a minute. I turned off the A/C, and the truck shut off again. It seems to be connected to the A/C compressor activating and shutting down. I am kind of leaning towards a bad BCM, because of the effect the A/C switch is having. I'll swap out the ECM and get back to you.
Friday, July 28th, 2023 AT 5:13 PM