4x4ord wrote:
My father has a quad cab 4x4 Dodge diesel SRW 3500. He has owned it since new and used it primarily to tow his 10,000 lb 5th wheel down the highway..... Very easy life. It has about 75000 miles on it and is vibrating at about 60 mph. The shop has changed all the u-joints and is now suspecting either the transfer case or transmission. Anyone have an idea?
60 is around where the torque converter locks up? Assuming it's an auto? My shift pattern is: 1st, 2nd, 3rd, lock, unlock shift into 4th (over drive)at around 55mph.