Ya, we have the GM TIS stuff, just used the vin and flashed a tcm, bamm, it worked.
Repinning the module is easy.
I didn't even try to tune the truck yet, the engine side was tuned already, it's still running on the stock 80e cal, i'll try tomorrow.

I'll check into that tcc lockup issue, i know what you're talking about, the avalanche does it, but i set it up like that, I like to free coast when i'm off the throttle, funny how one mans complaint is another...