Hello so I have a 14 Sierra 1500 sle 4x4
i was towing my 16ft flatbed trailer and using the 4hi mode and I back the trailer up and turned it off with the 4 on. I turn it in and the service 4wd shows up. I said huh weird and pulled the truck out. I tried to turn it back to 2wd and it won’t change. The light doesn’t turn on for 2 hi, auto or 4low. I know that it’s in 4hi bc when I turn it hops. Had to drive with the 16ft for about 30mins on 4hi