hey fellas looking for help on my swap, i have been holding back on it but my budget is a little tight write now, so im looking on doing it my self i know general/basic machanics, this would be my first swap. I have a 2003 silverado with a 4.8 or 5.3 i was told is a 5.3 when i bought my truck. I have a 6.0 i want to swap in it. I have heard an seen people just swap these in there truck's and say is a plug an play with a 6.0 pcm. where should i start first? in my swap any write up's you guys could send me or step's on doing this swap, any issues i would come across, any concers too.

 

It's a direct swap, the PCM in your truck will work