I noticed a rusty spot on the rear quarter panel in 04/2010. I could not believe that this expensive vehicle was actually rusting out. It has since grown to be extensive on that rear panel and now it has invaded the driver's side as well as both rocker panels. It will require a ton of expensive body work to correct this pitiful situation. I had thought that GM would have recalled this vehicle for all the problems I have had with it but the wait is futile. No more GM for me!