Vibration at speeds, 50+

[SinisterSF]

I've got a 2008 cobalt and I'm kind of stumped. I was getting vibrations around 50 mph, and they got really bad if I hit the brakes. So thinking it was warped rotors is replaced them and had the tires balanced. That helped but still wasn't gone. So I replaced the front hubs, didn't improve anything.

I've done the left and right/push pull check on the tie rods and there is zero movement.

Any ideas on what to do next?

 

[YelloEye]

You bought all new rotors? And had the wheels rebalanced?

Ain't much else that can cause that sort of problem. Unless you've got flatspots in the tires.

 

[esox07]

Bad tires in general.

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[David S]

I've got a 2008 cobalt and I'm kind of stumped. I was getting vibrations around 50 mph, and they got really bad if I hit the brakes. So thinking it was warped rotors is replaced them and had the tires balanced. That helped but still wasn't gone. So I replaced the front hubs, didn't improve anything.

I've done the left and right/push pull check on the tie rods and there is zero movement.

Any ideas on what to do next?

Any more symptoms, can you be more specific?

 

[Donald Sharpe]

You bought all new rotors? And had the wheels rebalanced?

Ain't much else that can cause that sort of problem. Unless you've got flatspots in the tires.

No, this is a common problem with these cars. We all replace brakes, rotors, tires, rotate tires before we ever come looking here. There are serious suspension problems with these cars that GM wont address. The funny thing is that this problem can be completely intermittent.

 

[Donald Sharpe]

Bad tires in general.

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Nope. Bad car, lol. My tires are new, still does it.

 

[allen Duesler]

I have this problem @60 mph +

 

[benjamin rushing]

If the car shakes does it also try and walk across the road as in you hit a bump in the road and it wants to pull left or right if so check your sway bar links and your inner and outer tie rods sway bar links will cause it to walk like you have low tires pressure inner and outer tie rods will make it also shake from the vibration if there wore out

 

[candymann001]

I had mine doing that and found it to be the rack itself....had a bad snubber/spacer in it...replaced the rack..because i also had play in my steering and shake is gone

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[Robie970]

I currently have a 09 ls with that same problem after replacing most of the front suspension I found I have a bad lower ball joint it’s clunks on turns and vibrates when I drive