2014 truck wont shift back to 4x2 or start
 

Hey fellas, I was trying to help my buddy out a ditch so I put my truck into 4x4l but I had forgot my tow hitch so I turned the truck off and went to the back hooked it all up Yada Yada, I get back in the truck and it won't turn on at all or shift back into 4x2, we had someone else pull him out. Then I stated reading forums on the 4x4 and I saw a couple saying that it could be a blockage in the teeth or something along thoose lines, so i put it in reverse and manually push it we hear some clicks and we managed to have it shift from 4x4l to high, but we still couldn't get it to 4x2 or even turn on[we tried messing with it neutral too], so we decided to take it to the auto shop[which was closed] anyways when we were towing it we kept trying to turn it on and switching it to 4x2 nothing happends except the truck died completely and I started to get a advacetrac error and a brake error. So one problem led to others, im not quite sure what's wrong with the truck but I'd really appreciate some more experienced minds onto figure out whats wrong with the truck. Thank you and have a great day!