Ok so I'm sure everyone know we had alot of snow in virginia. I was driving all day and the 4wd worked fine then all of a sudden only the left front tire would turn and ideas ?

 

Could be the right hub is not engaged anymore. Do you have manual hubs, or automatic? I won't be able to offer any repair ideas, but the more info you have the easier it will be for others to diagnose your problem.

 

I have auto hubs