Vibration at 65 - 70mph

[danfoley]

I have a 2000 Tahoe with a vibration through car that appears between 65-70mph. The vibration is not isolated at steering wheel. I had a Tire Center check the tires for balance. They said the front suspension was tight but that it was bad U-joints on rear drive shaft. I check for myself and found them in good shape, but replaced both of them because they were inexpensive for the most part. I rotated the tires before testing. Found that the vibration seemed different (in my mind?), it was still there. All fluids are up to levels. I am at a loss for what else it could be. Any suggestions? Thank you

 

[JDenhamYukon]

Maybe outta balanced drive shaft ??

 

[TahoeJo]

If it's still there but seems different, i would suspect it's a separated belt in one of the tires. Would've been better for your diagnosis if you roadtested it before rotating the tires.

 

[TahoeJo]

BTW if it's a 2000 then you posted this in the wrong area. This is for 2007 and up. Moderators should move this.

 

[bowtie_hoe]

Could be a seperated belt, but usually you will definetly know when that happens. It'll shake really bad! Not to mention the tire shop SHOULD recgonize a defective tire during balancing.

A simple alignment may be your answer. Some shops do it for free if no adjustment is needed, so what's to loose?

 

[danfoley]

Still Vibrating......

New: U-joints Front and Rear, new tires, tight front end, aligned.....sstill shakes.

Replacing rear bearings this week-end.