anyone develop a shudder?

[robobx]

I've had my truck for 15 months and 52,350 miles and it has just recently developed a shudder on take off in 2nd gear up to about 15-1600rpm. not pulling a load, bed not loaded, although I haven't tried loading up to see if it still does it.



has anyone had this, had it fixed? what was the fix?



Thanks for reading and any ideas!

Rob





[edit] I should have mentioned that I did have the tsb clutch rattle done at about 32,000 miles. but this shudder has just started.

 

[robobx]

ok update, this afternoon the shuddering got a little worse. Then pulling off the interstate it got insane. but the whole truck is vibrating something fierce. as long as the truck is moving its vibrating. I called a tow truck to take it in to the dealer.

I'm guessing u-joint. but dunno.