This comment is based on my 12/28/2018 service experience. I arrived on time, was met by a service manager as usual/expected. While I had already schedule my appointment online, it appeared that the service manager did not have knowledge as to what services I had scheduled. After informing the service manager that I was there for a state inspection, I also wanted the battery and wiper blades replaced. I had a GM coupon for discounted parts if serviced by a GM dealer. The service manager was very polite, agreeable, and compliant with all my request. I have no complaints about the service manager or services performed. My complaint is when I got into my truck to leave. I had specifically turned off the radio before arriving. When I started the vehicle, the radio was on, the volume seemed to be louder, and the radio station changed. The console was showing a radio display instead of the display which I arrived. I don't understand why the GM technicians feel the need to change costumers vehicle settings (Seats, radio, A/C, etc.). This is just down-right inconsiderate. It took me several minutes to return the vehicle to my preferred settings. I specifically take this vehicle to my dealership for service in order to maintain a Certified maintenance record. Although I know I could save money by performing some of the minor maintenance myself. I hope this does not repeat itself!!