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Discussion Starter #1
New to the forum.

I have a 2004 Chevy suburban 2wd that has developed a really bad vibration at 65mph literally all the way up to 60 no vibration and past 74mph vibration stops

I have had almost the entire front end replaced (from the hubs to the steering link) I have also had the suspension replaced as well and there is still a vibration

The driveshaft is aluminum and I did replace the rear u-joint and the vibration did dissipate a little. I want to a axle shop and they said aluminum axles can't be balanced and sent me on my way so I'm not really even sure it's it's the axel.

Any ideas where else the vibration may be coming from? Or if you think the axel is bad?
 

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You need to describe how you fell the vibration so you can get help.
Is it from the steering wheel?
Is the whole Suburban vibrating where you can see the seat and head rests shaking?
 

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Replace the front u-joint too. When you replaced the rear, did you mark the yoke to assure it was reassembled the same way? If you flip the yoke 180 degrees, you can get vibration with the new u-joint.
 

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Yes, u-joint. Just had the same issue with mine and vibration at 30 mph and 60 mph right on the nose every time
 
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