Mostly like Chrysler since they have to be programmed to your VIN. The problem is Chrysler dealerships for the most part dont won't anything to do with a crossfire.

As others have said, are you certain it is the ECM. They rarely fail, and by rare I mean lotto jackpot mega millions rare. What exactly are you being told? Just because your car does not start does not mean its the ECM, it could be the skreem which is something different.