Hey guys I did some searching but all I find is auto to manual. I have a 70 el camino with a 04 gto ls1 built with a pro tuned ecm. However it originally had a t56 behind it. I need to program this pcm to control the 4l60e without compromising the tune on the pcm. The pcm is not locked just need info as I only want to try this once. Let me know!