ok guys so i have a question im sure someone has alredy askd just didnt catch it lol.. i have a future build in mind with a ls3 and wanted to know is ther any way to make a 6l80 work in my truk bein a 2003 sierra rcsb..???? wut would be required in makin this move and is it worth it? appreciate any info that would point me in the rite direction..

 

Speartech made it work, but they had to end up using like 3 different computers last I heard. If I remember right, you need a stand alone computer for the transmission, another to make the sensors work, and the regular PCM. That may be a little off, so hopefully someone will correct me, but you get the idea.

Long story short, it's a major pain in the ***, and I've only seen a couple of them done.