When traveling at apprx 65mph, the truck starts shaking/trembling badly, steering wheel shaking side to side, I had to drop speed to 25/30 mph to regain control of steering and control the shaking... After about 15/20mins it would be normal again... but after traveling again at 65mph for about 1hr, it would start shaking/trembling like it wants to explode. This is a very well taken care of vehicle fairly new (2010), certainly should not have ANY of these kinda of issues!