Dempsey

Greetings I'm new to the club today. These forums are great as I usually find the answer here before I go to the dealership and have to listen to their BS. Problem- I have a '15 Silverado LT Crew Cab 58,000 miles and my passenger side front door lock just quit working. It doesn't open with the Fob, the driver side door lock switch or the passenger side door lock switch. Since it has no manual key door lock, I have to open rear door and reach in to unlock the door manually by pulling up on the nob. I'm assuming it's a switch, relay or actuator problem. I've owned many GM's and have replaced the window and power mirror switches before. Pretty simple to do. I never got into changing the actuators as I don't feel like tearing apart my door. Has someone had a similar issue with just 1 door out of 4? What was the problem? I can take to dealership, but the ones near my house bends you over and doesn't ask permission first to violate you. I had the AC issue fixed under warranty, now I have this problem. With it being a '15, pretty disappointed in GM's quality lately.