How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Mark Your Own Question
Mark, ASE Certified Technician
Category: Chevy
Satisfied Customers: 847
Experience:  34+ yrs Dealership Exp. - Fully State & ASE Certified - GM Master & GM World Class Tech
Type Your Chevy Question Here...
Mark is online now
A new question is answered every 9 seconds

Chevrolet Cobalt LS vibration and noise front end

Customer Question

I have a 2005 chevy cobalt has a vibration and loud road noise coming from drivers side front tire checked all tires nothing wrong checked hubs nice and tight slop in cv shaft at transmission changed cv still slop and noise can the stub shaft on that side be replaced and how car has 64000 it is an automatic transmission
Submitted: 5 years ago.
Category: Chevy
Expert:  Mark replied 5 years ago.
Greetings and welcome to Just Answer. My name is Mark.

I don't know how much slop we're talking about here. Some movement is very normal. I would get too excited with that.

I highly suspect you have a wheel bearing issue here. The "snow-tire" noise or as you put it "road noise", is usually from a wheel bearing. Even though you feel the wheel bearing is good and tight, the bearing itself could be failing.

Inside the bearing is just some big steel balls. The are a little bit smaller than marbles. If one of the balls gets scored, for what-ever reason, as it goes around, it eventually scores the race and the other ball bearings.

As you are driving down the road, say 40 - 50, and the noise is fairly noticeable, safely try swerving sharply back and forth. You are not putting the weight on the RF or the LF. You noise should change. If you can swerve in and out of the noise, most likely the noise is coming from a wheel bearing.

And don't be caught up on which side it is. There have been many times one could swear it was on the left, only to find it was on the right.

We usually raise the car on the hoist and have an assistant spin the wheels while we listen with a mechanics stethoscope and pinpoint the failed bearing.

I will add here though, unless the bearing is extremely failed, loose on the spindle, a "vibration" is not associated with the bearing. When you replaced the "CV", does that mean you just replaced the "CV" tri-pod joint? Or did you replace the whole "half-axle".
Replacing the whole half-axle is the way to go. They are cheap enough and it make the repair complete.
Customer: replied 5 years ago.
I did replace the whole half axle much easier then rebuilding the slop is about .125 of movement up and down from center if you grab shaft right by tranny if that is normal will put up on stands and check hubs with stethoscope noise does not seam to change going straight or turning starts at 25 and changes with speed
Expert:  Mark replied 5 years ago.
Very good. I personally don't think the movement with-in your shaft is your issue. There should be some movement there. You might compare it to that of your other side. There's a little difference between the two, however, there should be some play.

The only other thing that comes to mind is your tires. You would be surprised the noise that can be generated by "cupped, feathered, or chopped tires". I am not there so see your vehicle, tires, or over-all condition. I can only give you my opinion on what we see and hear in the field.

Even if your tires have good tread and look good to you, run you hand across the tire. See if you can feel "sharp edges". Look closely at the tire. A person can see the "chopping, cupping, and feathering".

If your tires are better in the back, see if rotating the tires changes your noise and / or vibration.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
< Previous | Next >
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland

Meet The Experts:

  • GM Tech (Cam)

    GM Tech (Cam)

    Chevy Technician

    Satisfied Customers:

    GM Grand Master Technician 2007. 14 years experience.
< Last | Next >
  • GM Tech (Cam)'s Avatar

    GM Tech (Cam)

    Chevy Technician

    Satisfied Customers:

    GM Grand Master Technician 2007. 14 years experience.
  • Tim's Auto Repair's Avatar

    Tim's Auto Repair


    Satisfied Customers:

    Have owned a repair shop for 25 yrs.
  • Gary's Avatar


    Chevy Technician

    Satisfied Customers:

    15 years GM master tech
  • Dave Nova's Avatar

    Dave Nova

    Chevrolet Technician

    Satisfied Customers:

    ASE Master Certification. GM World Class Certification
  • John's Avatar


    Master A.S.E Automotive technician

    Satisfied Customers:

    A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
  • Don 'Mo Lurch''s Avatar

    Don 'Mo Lurch'

    Auto Mech / Electronics

    Satisfied Customers:

    Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.
  • Ron Z.'s Avatar

    Ron Z.

    - Chevy Tech -

    Satisfied Customers:

    18+yrs experience. State Inspector and Chevy Diagnostics