I have a 96 LT1 Vette that I am trying to set up a laptop based scanner and tuner for. My main issue right now is disabling VATS. What software would be best for this platform? I have looked at enough of them that my eyes are crossed and I am very confused about which ones do what. Some list OBD2, but only after certain years.

I also have a 2008 Cadillac CTS 3.6l that I need scanner software for also( hopefully the same software).