vibration,shake, hmm noise

[tahoe74]

2001 Tahoe 2wd, 5.3 200,000miles

55mph -65mph, 70mph-80mph there is a shake, vibration, shutter and a hmmm noise throughout the vehicle, it seems to be felt in the seat and in the steering wheel along with seeing the front passenger seat-back shake.


Any ideas?

 

[GangstaCowboy]

I had a bad U joint cause this. Replaced one with a 10 dollar auto zone part and it went bad 6 months later. Had the vibration and figured it wasn't the u joint so I took it to a shop and it was another bad joint. $300 dollar lesson learned.