Any idea what would cause me to loose 4wd in my diesel. Last weekend I got hung up going up a sand hill and got the truck high centered (sitting just about on the transfer case. I noticed that it pulled my vacum lines off but I stuck them back on. My truck still had 4wd when this happened and I kicked it out later but know I cant get it to turn back on any ideas?
Evan

 

those lines are plastic, you probably just have a crack or breakin one that you can not see. I had a similar thing happen, then when I searched I found the break.