Having a problem....help?

[SSport]

Ok, I have a 1996 Tahoe LS with 210,000 miles on her. I'm getting a decent amount of vibration felt throughout the whole truck between 60-72 mph.
Thought it could have been the tires needed balancing so had them balanced. All four were off balance and fixed, but the vibration is still there.

Any ideas? Something having to do with the suspension perhaps?

Thanks in advance!

 

[blk87brd]

My first check point would be U Joints on drive shaft or bent drive shaft? then tire out of round? then motor transmission mounts? These would all be checks not replacement.

 

[SSport]

Thanks!

I was thinking along the lines of something having to do with the drive shaft, but I was hoping not. Tires aren't out of round....had that checked as well since we did have one out of round that was brand new......

I'll check the u joints as well.

 

[tahoeman960208]

it could be stuck in 4wd somehow. that would cause a vibration at those speeds.