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2006 Chevrolet Silverado vibrations

Tiny
SCOOTY1280
  • MEMBER
  • 2006 CHEVROLET SILVERADO
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 68,504 MILES
Recently I have noticed a vibration and different sound to my Duramax truck. I have noticed the vibration is especially bad at speeds between 45 to 55 mph. I can't see anything loose under the truck. I can also feel under my feet while driving. The sound of the truck that I was used to has also changed. What do you think is wrong? I thought about changing the u joints but not sure if that will fix it. What do you think?
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Friday, December 5th, 2014 AT 4:58 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
U-joints are the most likely suspects. You can check them for looseness by twisting on the drive shaft while the truck is in neutral and the wheels are blocked, but a joint can be tight too. You have to remove the shaft to check for that. Tight joints will also often have a reddish-colored powder around one of the bearing cups.
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Friday, December 5th, 2014 AT 5:25 PM

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