[Degs98]

The dealer had the driveshaft out i believe said u-joints and driveshaft looks fine. Ive only had it about a year and a half and the guy who had it before me took amazing care of it. I havent changed the fluids other then the oil which i run synthetic, and i do grease it yes. It has 42,000 on it so like i said its low miles. The weird thing is that if i put the 4-wheeler in the back of the truck it wont vibrate only when I have a load behind it. That makes everything seem like the trailer but I know it isnt because as i said i have pulled my trailer with other trucks and it wont do it. Im stumped