Hi, thanks for the reply ! I am using the autoenginuity scanner to get my info, I haven't been running any chips etc for several years so it's bone stock in that respect.. Ahhh.. yes the harness, I think this is an electical gremlin also but mine is a mid '04- late '04 engine apparently ( ICP is on the valve cover ) so is that one of the trucks that is prone to the chaffing ? Do you know if PCM's go south very often ? As I mentioned, I am getting a no com to the enhanced powertrain module warning.. I did check the plug as best I could so far but I need to revisit that and re check. Any idea of how much a harness is and how long to swap ? It looks like a HUGE pain in the **** to unsnake it all only after removing a ton of stuff to get it in.