https://gsi.ext.gm.com/gmspo/mode6/index.html
That link was working not too long ago...any who here is the latest one! btw, If you guys need any alldata or mitchell info or wiring diagrams for anything (gm or nor) let me know.
honestly so far it is, just a DIC upgrade for now is what im finding, i even talked with my buddy whos got my truck for now and he said he's do it....so we'll see