06 shudder vibration

[bigdaddycummins]

my 06 has a shudder vibration in all gears [auto] if i jump on it i dont notice as much but when just crusing along its pretty bad shudder and vib in steering wheel and floor when i let off throttle it smooths out also engine shut down is very violent this is my fourth ctd its not normal have another 06 same truck rides like a caddy dealer says normal till i took them for a ride in other 06 there not sure what it is and dont seemed thrilled to help me out anybody know what to start looking for i would appreciate your help truck drives like it has 300000miles on it and only has 3000 thanks

 

[JHardwick]

dude, take a breath, posts are hard to read without periods, commas or question marks ... ... ... ..... oh, and use the search function, reading old posts can be very informative!

 

[bigdaddycummins]

the shudder vib that iam talking about is there all the time. when iam going down the road at any speed its there. as iam going down the road and take foot off throttle it smooths out, back in the throttle then its there again its not the 70 mph vib its all the time i sure could use some ideas , i dont think its tire related cause when off throttle its gone. could it be driveshafts even though when off throttle its gone . HELP

 

[sonorakitch]

Sounds like a rear U-Joint to me... they are known to fail early.



~Chris

 

[JHardwick]

I'm guessing ujoints as well.