Attention: TDR Forum Junkies 
Alan Reagan
TDR MEMBER
I stopped by my dealer last Friday to pick up a new wiper arm and while there, I got the mechanic to listen to a grinding ping the truck was making when going from drive to reverse or reverse to drive.
Quick and dirty is that he put it on the rack and could twist the driveshaft by hand and duplicat the noise. Thinking first that it was the rear u-joints he checked the twist both front and rear and the noise appeared to come from the end where the torque was being applied.
Result: a new drive shaft at 13,400 miles. He said he had just put one in a 3500 last week, same problem. Apparently, the cause of the early u-joint failures in some of these trucks might be a yoke problem coupled with bad ujoints.
Quick and dirty is that he put it on the rack and could twist the driveshaft by hand and duplicat the noise. Thinking first that it was the rear u-joints he checked the twist both front and rear and the noise appeared to come from the end where the torque was being applied.
Result: a new drive shaft at 13,400 miles. He said he had just put one in a 3500 last week, same problem. Apparently, the cause of the early u-joint failures in some of these trucks might be a yoke problem coupled with bad ujoints.
