That's pretty much the same speech I gave to some pimple-faced adolescent behind the counter one day when I needed to get a code scanned. He pointedly stated that my truck was a T-10 Blazer, and that he did have the right scan tool. I just nodded and then rolled my eyes when I turned my back - I *knew* that he needed a translator card/socket adaptor to fit the 16-pin OBD-II look-alike ALDL port on my truck...but they know better. It has everything to do with the sacred powers one must possess before they don the Autozone Uniform. Unfortunately, part of those powers also imbue one with an incredible amount of sloppy diagnosis proceedures and a self-assured demeanor that is unshakable. Even when the scan tool beeps and says "Datastream Sync Error" and I let out a well timed, "Told you so..." *snicker*