PCM questions 2003 5.3 to 99 obs tahoe

[tommypvt]

Going to swap a 5.3 into my 99 tahoe. I was planning to do a 0411 swap and run on my 5.7 but now have the option of getting a pretty much complete low miles 5.3 parts truck for a good deal.

Should I just use the ecu out and harness from the 03? I knew the 0411 was good because it was kinda an in between the 5.7 and 5.3 years. But I imagine I can just pull all of that and integrate the newer harness into what is there.

thanks