The LCD screen will just display if TCS is on or off. You can't control it from there. I'm also pretty sure that the LCD screen displays nothing about ESC or RSC being on or off, but the user manual explains it. I have also tested out the ESC being off versus just having the TCS off.

You can tell a difference on a gravel road. With just TCS off, you will still maintain positive traction, leaving 2 peel out marks (the best setting for going offroad). With ESC turned off, your truck will act like a true open differential, leaving 1 peel out mark (I see no practical purpose for turning this off).