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I have an 02 avalanche Z71 and when I get to about 75 miles per hour I start getting a vibration in the floor and a loud sound like comming from engine or possibly drivetrain. Any thoughts?

70MPH and lower there is no vibration and no noise.

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  • Cars & Trucks Master
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I WOULD START BY CHECKING THE U-JOINTS AND SUPPORT BEARING

Posted on Dec 15, 2014

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