Hello, would anyone be willing to walk me through what’s needed and how to get/use tech 2 on 2006 LBZ ? We bought a real tech2 when we had a couple of lb7’s in 2001 but those are long gone and i completely forgot how to use this thing. I plug it in and the card that is labeled GM isn’t being recognized or read? I have another two cards. One says Isuzu which it recognizes when i put it in and the other card is blank. I guess my first question is how do I possible update this dinosaur and how do o get the info needed onto a card for it to work on my 06 LBZ? Thanks for any help