IBMobile, I am aware of what the PCM does. I apologize for not being clear enough in my post. My main question was is the Automatic engine harness the same as the Manual engine harness. Hagger has verified this for me.
I know this has been discussed a billion times but i am unable to find the answers I'm searching for. My question is will a 2001 diesel manual ECM work on a 2001 diesel auto engine wiring harness? My tuck is a 2001 automatic 4x4 Cummins. The doner truck I'm using for parts is a 2001 manual (5 speed) 2wd. I have removed the PCM and its harness from the doner and I'm planning on swapping that in to my truck. I have been trying to get a hold of Smarty so they can hopefully change the VIN # as well as the mileage of the doner ECM & PCM to match my truck.