Got the chance the play around with mine a bit...
05 Yukon: I can't seem to find how to reprogram keyless remotes with the Tech2... any help? I found a procedure that doesn't require the Tech2 but it doesn't program them for Driver Memory Control from what I understood (which is possibly how mine have been programmed because they both recall Driver 2 settings).
05 Yukon: Playing around changing tire size, in the BCM (IIRC) which I think would control speedometer/odometer readings it won't let me change tire size, says it cannot establish communication with the module, but programming ABS it will let me change tire size... ????
00 Buick: I cannot find where to change tire size at all (this is the one that actually needs it because I'm running a size bigger than stock), but I did find how to reprogram my keyless remotes (didn't do it yet bc my 1 remote must have a dead battery, it wasn't picking it up when I tried to program it)
Overall: I'm a little disappointed so far. The menu navigation is a bit difficult, it's almost overwhelming because there are so many control modules it can be confusing where to go to do what I want and the menus aren't always intuitive. The ability to actually make changes is very limited, at least in my Yukon. My 00 Buick I can do a LOT of things quite easily including DIC (Drive information center) changes that are very cumbersome to do through the dash. I'm almost wondering if I navigated to the wrong vehicle information when I hooked it up to the Yukon... I was able to do something, but other times it seemed like things I should have been able to do weren't there. IE, I got to the driver door control module and rolled the windows down with the Tech2 (would this troubleshoot a faulty door switch?), but couldn't establish communication to change tire size (to simulate a hypothetical change from stock tires and still get speed/odo to read correct).
