Well after driving it more and it doing it more often I'm thinking it's something to do with my 4WD system. A week or go I was in a situation where I had to use 4WD High on the concrete but didn't turn it while driving and didn't go over 20. Thinking back that's when the problem seemed to have started. I know it's all automatic but just for s%its and giggles I put it in 4WD High, back up 15 feet or so, went foward 10 feet or so then kicked it back in 2WD. I didn't get to drive it much after that but for the short amount of time I did it didn't do it again. Is it a possiblility that I ruined something or did 4WD not properly disenguage? I also notice that my front axles spin when I drive, are they supposed to reguardless if it's in 4WD or 2WD? I'm extremely ignorant of the suspension of this truck and the newer 4WD systems as well. I'm going to bring it in the dealership Monday but I'd like to know what it might be ahead of time. Thanks in advanced...