Cloned GM MDI interface:
MDI/GDS2 is used on C7 Vettes, and other vehicles prior to 2014 (for example, Chev Cruze starting in 2011 uses MDI, as well as others).
Cloned GM Tech 2 scan tool:
I use the Tech2 on my 427 vert as well, and it does everything stand-alone except module recalibration (programming or ‘flashing’).
By the way , There wasn’t a single all-inclusive model year where they cut over from the Tech2 to MDI for all GM models. It had more to do with platforms that were more-or-less fresh designs or clean-sheet designs after about 2008 or so.
Why MDI interface is more preferable for GM?
Flash faster: MDI & GDS2
As for why ...