Abnormal feel and sound from truck-possible rear end?

Hey Guys,

Just want your opinion before it goes to the shop maybe some of you can give me an insight as to what they may tell me. Here is the problem. Upon starting my truck and leaving from where ever I am any time I make a left turn there is a sound and feel from the truck that either sounds like a rear end gear problem or I am completely stumped. And it only happens on left hand turns, the feel is like something pulling the truck in the opposite direction I am going and i can feel it through the steering column and through the floor boards and back of my seat. I understand my description may not the best but was unsure if any of you out there have any insight as to if this has happened to you, or if you may know what is going on.

Matt

 

probably need to change the rear diff fluid

 

really, with only 42k on the clock?

 

this exact same thing happened to me but it did it after driving around for at least 10 mins or when it warms up and it did it turning left or right but yea i just changed oil in the diff and make sure you put the lsd additive in it