I bought this vehicle as a GM Certified Per Owned with 2,233 miles on it. The second day I noticed that when placing the vehicle into reverse, the transmission was grinding. I took the vehicle to my local GM Dealership and was advised the noise was normal and there was nothing they could do about it. The dealership I purchased the vehicle from failed to communicate with me in regards to the issue. I called the as soon as I noticed the problem. They have failed to provide any time of guidance to resolve the issue. I have plans to take the vehicle to them tomorrow and drop the vehicle off with no plans to return for it until it is fixed!