The Murdock dealership family went way beyond service. I needed to be back in my car to get to an out of town funeral. A mechanic came in before work hours one morning to put in a warranted part that had taken GM ten days to deliver. I was on the road in time to get to my destination. I have never had a dealership work so hard to get my car rolling. The Murdock dealership gets a perfect score for service and helpfulness. GM gets a D- for lack of ability and interest in fulfilling their warranty in a timely fashion.