Klaus
I am still tring to find one. Hopefully in a week or two I will have one to play with.
Some one one the Avalanche fourm said they call Delphi and they stated it would lockup and they would not unlock for anyone. I am not sure if the vin can be change or not with software, but it sounds like it can be changed if they can do it. what I am going to do is try to change it before it is locked. If the dealer changed you vin in your computer for some reasonand you have XM would it change the vin in the XM or would it lock it up. I think it will change it. I think if it locked it up it would give techs dumb luck and have to replace it just because they change the vin for some reason. I am going to try so I can give them the finger again after saying the UM8 cant be done. We will show them what we can do.
Scott