Hi, I imported a Colorado (2007) to Germany. Drive it since April of this year. From time to time he didn’t want to start and now it’s almost daily. Reason = Passlock! Didn’t notice that I don’t have any original GM keys and now my car means that I want to steal it more often. Actually, a great thing… the security lamp flashes and the spray drive is interrupted for 10 minutes… the car really doesn’t start. So just helps wait… I was in an Opel- Chevrolet workshop. They didn’t know the system at all and couldn’t get me an original key. Do anyone have an idea ???