Hey guys it's been awhile since I've posted anything. I recently picked up a 2001 1500HD with the 6.0. The motor was bad but guy had bought another motor out of a 2002 2500HD. I put motor in and it runs good but is sluggish at times and isn't very responsive. My question is does ecm from the 2002 needed for the swap or am I ok with the ecm that was in truck from 2001?
Use the pcm that is in the truck.
Swapping for the same engine doesn't require a retune; so make sure all the sensors are reading, no codes, then scan data to ensure all readings are within spec.
Or it could just be that engine.
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Thanks for the reply farmtruc. I also have a cold start issue that I can't figure out. I did sending unit, fuel filter, plugs, wires, fuel pressure regulator when i put motor in a month ago. But the last 2 days it's been 25 degrees in morning and it fires right up?
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