Question about Chevrolet Cobalt

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2008 chevy cobalt violent vibration arouhd 55mph ok below and above speed have replaced joints tires struts, vibration still there

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  • william alderson Nov 27, 2013

    Hi william alderson, I want to help you with your problem, but I need more information from you. Can you please add details in the comment box?

  • william alderson Nov 27, 2013

    everything on frontend replaced also has been aligned

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  • 272 Answers

Warped rotors or out of balance tires can cause this. Have you had a front-end alignment after putting these steering/suspension parts on? When replacing these parts IT IS CRITICAL TO HAVE ALIGNED. Also, Have you checked condition of front HUB/WHEEL BEARINGS?

Posted on Nov 14, 2013

  • william alderson Nov 27, 2013

    have replaced bearins, everything on frontend has been replaced and aligned

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Posted on Jan 02, 2017

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Tasha Parker

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SOURCE: front end vibration

your alignment could be off

Posted on Mar 30, 2009

Bruce Hathcock

  • 3600 Answers

SOURCE: Our ?94 Toyota 4runner has developed a vibration

You have a tire that is out of round. Jack up the tires about 1/2 inch off the ground place a pencil at the edge of the tire and while turning the tire look at the bottom of the tire and between the ground watch to see if tire goes up and down or wobbles side to side as you turn the tire. If tire is out of round it will cuase this problem. Also check you beargins on the fron wheels to see if they are loose. to do this grasp the tire at top and bottom and try wiggling the tire back and forth, if there is movement the bearings are loose or you have a bad tie rod end. However the most common overlooked problem for this car is The passenger control arm. If you need more help post here and Will give you some more do it yourself tests. This will narrow it down and save you some money.

Posted on Sep 27, 2009

Anonymous

  • 3 Answers

SOURCE: 04 Dodge 2500 4X4 shakes violently after hitting bump at 55 mph +

The bumps do initiate the shaking. When my 2006 Ram 2500 4x4 started shaking, I had just had it aligned that morning. A month or so before that alignment, my passenger side outer tie-rod broke while driving down a rock road. I replaced it with a heavy duty MOOG tie-rod end. Anyway, the same day I had it aligned I was driving back home from a job and towing my bobcat behind me. I hit a bump and the truck did the "death wobble" with the front end shaking violently up and down in an alternating fashion (one tire in the air while one tire on the ground and then vice-versa). I changed the tires first (which were worn-out 305/75/17 mud tires). Since the day I bought the truck new in Jan. 2006, I've had larger tires on the truck than the tiny 235/75/17s that came with it and I've done a lot of heavy towing with it and never had a problem until this alignment was done at Sears. I;m still trying to figure out if it was the alignment specs that they used or if the problem coincidentally started that same day. I also changed the steering stabilizer. Neither the new tires nor the stabilizer/damper helped the problem. So I changed the other outer tie-rod end and the upper and lower ball joints (all MOOG with grease fittings). I turns out they were worn out. So, the truck no longer shakes violently up and down when I hit a bump. That problem seems to be in check. However, now when I hit a bump the truck's front end wobbles side-to-side. I can do a few things to recover from it. I can hit the brakes pretty hard and sudden (which can cause an accident on the interstate), or I can **** the steering wheel side-to-side a few times (from 10 o'clock to 2 o'clock) and that stops it immediately...until the next bump in the road. Also, if I let my foot off the accelerator just before hitting a bump and let the truck coast over it instead of power through it, sometimes the truck will ride over the bump without incident. I found out yesterday on a 5 1/2 hour road trip that if I did 80 to 90 miles per hour and powered through every road blemish, the truck rode fine...no shaking at all. I suppose the high speed forces the tires to stay straight when they hit a bump. Lastly, to confuse my problem solving attempts further, sometimes the truck rides like a cadillac (for an hour or so) at regular speeds and no matter what bumps I hit. Then without worning, the front end will loosen up and get that sloppy feeling again and the wobbling comes back at every bump...until the next time it feels like tightening up and driving right again. I have no idea what to do now. I'm going back to Sears today to have them check their alignment. Other than that, all I can think of is to change the rest of the steering components and check the steering box for malfunction. I hope someone can help all of us Dodge owners out off of the road tested info that I've just provided. Dodge doesn't seem to care to address the problems with their trucks front ends, and we need a solution before people get hurt or die. I was almost run over by an 18-wheeler trying to figure out how to handle the shake. I can't afford to buy another truck. So I need to fix this one so I can keep working. If anybody has a concrete solution to these problems, please let us know. I've read 20 different opinions from mechanics on these blogs, but nobody has said yet that they fixed someone's truck with these problems and have since heard from that customer and everything is still working fine. Opinions are helpful sometimes, but they're also confusing when they're conflicting.

Posted on Jan 23, 2010

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1 Answer

I have a 2007 Pontiac Torrent FWD with a violent low speed vibration. we have replaced the lower control arm assembly and the hub bearings along with the brake pads and rotors.


Struts would not cause vibration problems, A CV joint could, turn your vehicle in a parking lot hard right, make a circle than turn left make a circle ,if you hear a noises you have a cv joint problem. If you feel vibration on the steering wheel its in the front, if you feel it in the seat its in the rear.
Tires out of round & Balance very common as well brake rotors cause vibrations.

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I have a 2005 chevy cobalt that is making a humming noise after 20 mph. I can also feel a vibration in the gas petal. "noise" increases with speed. Higher milage and just had struts replaced about 150


squeakey69 is right it sounds like you have a wheel bearing problem cobalts are notorious for wheel bearings going bad i would go ahead and change both front bearings because if one is going bad the other usually isnt far behind hope this helps.

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Steering Wheel vibration only at certain speeds.


I suggest having the steering and front suspension systems checked, including: ball joints, tie rod ends, steering dampener (if equipped), upper and lower control arm bushings, hub bearings. I would also have the U-joints and motor mounts inspected in the process.

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This can be cause by many different things. First thing to do to is balance all four tires, then check the vibration, if it is still there then check your steering sytem (ball joints etc.) Check all struts or shocks for wear, hope this helps.

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Hi Shane, It is possible that the tyre has been damaged. Take it to an alignment center and have them balance all the wheels and check the tyres. Regards John

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Have grand caravan 2001 awd i get to 50 it starts vibrates think it might be carrier bearing after 50 it seems to lessen some no problem in front end what do u think


Most vibrations at speeds from 45mph to 55mph indicate tire balance problems. If there is no vibration outside this range have the tire balance checked. If there is a vibration that starts around 50mph and continues at higher speeds there could be a problem with the CV joint(s).

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Our ?94 Toyota 4runner has developed a vibration


You have a tire that is out of round. Jack up the tires about 1/2 inch off the ground place a pencil at the edge of the tire and while turning the tire look at the bottom of the tire and between the ground watch to see if tire goes up and down or wobbles side to side as you turn the tire. If tire is out of round it will cuase this problem. Also check you beargins on the fron wheels to see if they are loose. to do this grasp the tire at top and bottom and try wiggling the tire back and forth, if there is movement the bearings are loose or you have a bad tie rod end. However the most common overlooked problem for this car is The passenger control arm. If you need more help post here and Will give you some more do it yourself tests. This will narrow it down and save you some money.

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2 Answers

2008 cobalt has recently developed shimmy in front end at low speed..<45mph is problem alignment or something more serious??also, road noise which has always been somewhat loud has definitely increased.


Your cobalt should still be under warranty, so you should bring it back to the dealer. If you have done massive driving and your out of warranty, then il'd have to say that you may have a wheel bearing hub gone bad and needs to be replaced. Check the tire pressure first, tire condition and look for any signs if tire damage like tire belt separation. Tire belt separation is when the steel belt in the tires that keep the tire it's shape has broke and there is a flat spot causing the wheel shimmy. If your not sure,rotate the wheel by placing the front wheels to the rear and the rear to the front, making sure the tires are properly inflated to the recommended PSI. Good luck and start with checking the tire first. 

Jul 16, 2009 | 2005 Chevrolet Cobalt

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