I have gone through the balance and TSB ordeal which did help but still have a vibration. I rotated my driveshaft, first 90 deg. then test drove it for a few days, it seemed to help a little so I rotated it 90 more deg. for a total of 180 deg. Seems to have made a big difference. Very simple to do.

Please post your results if you try it.

 

My XLT Screw has a slight vibe/rumble at c. 55 mph...the one that disapprears when the tranny is put in neutral. I'll give the drive-shaft rotation a try.

I haven't been under the truck yet to assess the situation, but I'll take your word that it's 'very simple'.

 

Simple... sorry

When you get the 4 bolts broke loose chalk your front wheels and put your tanny in neutral don't pull the driveshaft out just spin it 90 deg and put the bolts back in. Keep a jack stand an inch or so under your driveshaft in case you have to rest it on something.

good luck

 

I just did the 1/4 turn and it has made a difference. I plan to drive it a week or so for a full eval and try it one more 1/4 turn. One word of advice, use some blue threadlock when you replace the bolts. A 12 point 12mm socket is needed, an impact wrench helps if you have one.

 

Thanks TJ and MO.

 

My dealer did all the things to the drives shaft including replacing it with a new one. Vibration was still present even though it was better. I'm waiting on a new rear end to be delivered to the dealer so they can replace it and hopefully put an end to the vibration issue.

Ron