Chris was very pleasant and polite, which he always is. We had a good discussion on what was tried to resolve the warranty issue. He and his technicians did make me feel that they are doing their best to find what is one of the hardest things to diagnose - an intermittent problem. I always left feeling that they had done a great job. I did very much appreciate the conversation we had to make sure I understood what was tried and the process. I enjoy working with Chris. It is a real team approach, with Chris, the technicians and the engineers at GM all working on the issue I am having. I also like the shuttle service that is freely offered, including a free taxi ride when outside of shuttle hours. The cost of providing this service does not go unnoticed.