Iteresting infromation, greatly appreciated.Getting the unit unlocked is doable. However like you stated above it sounds like a poor investment given the failure rate. Im sure eventually GM or a company will find a solution to this issue. For now I've found a direct fit and direct plug Bluetooth unit with navagation that is plug and play and includes the bezel. Sadly a car made of 100% foriegn parts and labor and a non AC-Delco made radio makes this upgrade impossible at the moment it sounds like. Thanks for your help