I have a 2015 GMC Sierra 2500hd duramax with 6.5″ BDS lift and 22 x 12.50 fuel mavericks with 37 x 13.50 toyo r/t.
I have a vibration in the front end between 75 – 85 mph. If i slowly accelerate or floor it through 85 nothing will happen, i have to have the right amount of torque for the vibration to start. I have replace the wheels and tires, ball joints, tie rods, front driveshaft and had the rear driveshaft checked and it still exists. Any ideas???