I went to start our Traverse about an hour after it was running fine with no symptoms. When I went to turn the key, all lights lighted up and then immediately everything went dead. The keys are now stuck in the ignition and there is no power to the car. The battery I tested and is full and all connectors are tight. I tried replacing the ECM1 fuse thinking it may have just blown, but that didn't fix the issue. Could this possibly be an issue with the ignition switch going out and not getting power? Or any other suggestions?