In another post i mentioned a vibration my truck has got when i take off in 1st gear (auto box 4.5 engine). I have since realized that it only does this when turnig as you take off eg: stopped at an intersection waiting to turn, as i take off and turn the corner there is a slight vibration through the drive train somewhere ?? I spoke to a 4X mechanic and before i could say anything he asked me if it did it when i was turning, when i said yes he said it is normal with GU's and it is because of the limited slip diff. Is this true of other Gu owners on this Forum ?? I am going to get the diff oil changed regardless but i am just curious to see if other owners have the same issue ??