Vibration on Decel

[StainlessRRA]

Well to add insult to injury after pulling the trans for a 4th time this year my truck as developed a vibration it never had previously. If I'm on the throttle or have the cruise set it won't shake, once I let off the throttle it will begin to vibrate like I'm lightly hitting a rumble strip. I'm not a fan of the new clutch pressure plate as it releases at the top and I can no longer shift fast so I had suspected it was assembled incorrectly this time around, yet the vibration persists if I hold the clutch in or not. Though it seems more pronounced in 6th gear. Any ideas before I tear into this thing? I haven't exactly had time recently and once I start tearing into this thing I know I'll be upset rather quickly and all logic will go out the window.

I guess I'll look at the carrier then pull the drive shaft and see if she still shakes first.

 

[BgBlDodge]

That's where Id start.

 

[SuperSonic]

My prior experiences with load related high speed vibrations usually wind up being a u joint, carrier bearing, or pinion angle issue.

 

[StainlessRRA]

My prior experiences with load related high speed vibrations usually wind up being a u joint, carrier bearing, or pinion angle issue.

Vibrations happen at all speeds, even coming to a stop. I really hope it's this simple we're having major flooding and my car is not an option.