So I was really excited when my salesman called and said my truck came in! I picked it up today, it's gorgeous and definitely feels a lot bigger than my 2015. Driving home everything was great until I looked down and saw the CEL on. Wow...didn't make it 20 miles. I checked the My Chevrolet app and it said there was an emissions issue. I called my salesman, he suggested that I call the service department and get an appointment for Monday (which I did) and he also said if I had means to delete the code to just drive it over the weekend and see if it comes back. I have an el-cheapo code reader and plugged it in and it's reporting code P0402 EGR A Flow Excessive Detected. But it wouldn't let me delete it, it said "Erase failure, turn key on with engine off". I tried doing it in Accessory mode and still wouldn't work, so I guess I'm heading back to the dealer Monday, ugghhhh SMH.