My 07 tbss has a noticible vibration that comes and goes and only happens between 60 and 75mph. The steering wheel shakes from side to side. I hate going to the dealer because they take forever and do not provide a loaner car. I've replaced a bad tire under suspect, and also rotated them and still have the vibration. Just wondering if any one has had this problem. Any help would be appreciated.

 

may want to try having the tires rebalanced and even have the alignment checked??

good luck

 

are you awd or 2wd? stock height?stock wheels?

 

all stock 2wd

 

If you have rotated the tires and still have the problem, you may be looking at a wheel bearing goin bad.

 

I have this same issue with my AWD 06 TBSS. It just started vibrating at about 25k miles. I was told by the dealer that it was the tires as well so I bought all brand new tires. It did not change the vibration at all. I returned the TBSS to the dealer and they acknowledged the vibration and attempted replacing the front hubs. They ordered in one new hub, and tried it on the drivers side. Upon test driving it they said it was still vibrating so they took the new hub off and put it on the passenger side. It still had the vibration so they put both original hubs back on.

They then dug up a TSB that said that this is normal vibration inherent in the rear suspension and that they are not to investigate it any further. I will never buy a GM vehicle again. It's still vibrating. It only does it at highway speeds, (65-75) increasing when minor pressure is put in either direction on the steering wheel, such as in a sweeping turn. That sounds like a rear suspension problem to me (sarcasm)!!!