99 Hoe Vibration at 70 mph

[billyboy]

Hi All,

I'm new to the forum and would like to thank everyone for all the helpful information posted here. I currently have a problem with a vibration at 70 mph and only 70 mph. I have had all tires balanced and an alignment done and still have the vibration issue. Not sure if the u-joints would cause this, as my experience with them going out is the vibration gets worse as you increase speed. If I drive below 70 mph no vibration and if drive over 70 mph no vibration, kind of frustrating to pin point! Any suggestions would be greatly appreciated.

 

[tahoeman960208]

There was a thread a little while back where someone had the exact same problem.

 

[NYrr496]

I had a vibration like that and then my trans ate itself.

 

[992door]

Here are a few thing that someone suggested for me to do when i had that problem

ranging from wheels, shocks, driveline or rearend...just to name a few.

first thing I'd check is wheel balance, then maybe u-joint play, could be that your drive line itself is not balanced or shocks are wore out...could be something simple like your exhaust is hitting the frame at higher speeds...

I never really figured it out. i dont know if it still does it or not. I will let you know when i get it back from putting a new transmission in it.

 

[billyboy]

Thanks guys for the responses. I had my tranny diagnosed and no issues present, so will probably change out u-joints and see if that will solve the problem. Not sure what else it could be since the tires have been balanced and an alignment was done before new tires.

 

[mrbigles]

I'm having the same issue on my 99 Yukon. I figured the tires needed to be balanced, but haven't had the time or rush because I mostly drive in town.

Are there any "tests" we can use while everything is on the vehicle?

Thanks