well this procedure has now change since the last 2 updates. It can still be done on pre-can bus vehicles with skim modules but on newer vehicles with wcm/win it will not work, if you turn key off then it will just give you a communication error. but is ok I have a different procedure you can use for newer vehicles and you will not need a pin code either. just go body/wcm or win/ misc function/replace pcm, you will be prompted to enter pin code, just exit that then you will be prompted to change vin number, hit ok. do not try starting the vehicle at this point, the transfer of the secret key have not taken place yet, turn key off for a few seconds then start the vehicle. that's pretty much it. this procedure can be done on both old and new vehicles. good luck.