So if you are under the age of 60 go somewhere else. I have a 2015 Yukon and I wish they would have a separate service bay for GMC. The folks that deal with the Cadillac and Buick service customers are used to a geriatric group of folks and they have no idea how to provide good customer service. I showed up for my appointment for an oil change and they had no idea what to do with me. No hello, no indication that someone was going to be helping me. They left me standing next to my car for 10 minutes before anyone approached me. At that point I might as well been speaking Mandarin Chinese. Oil change, whoa, ahhh?!? Was the response I got back. Finally when everyone got the idea that I just needed an oil change and I had an appointment the light clicked. Maybe the folks here are used to people speaking slower or something. Anyhow, everyone has treated me like I'm going to steal something since I have been here. I am watching them bend over backwards for the older folks here. I wonder what happens to Cadillac and Buick when their customers completely fade away?