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-   -   Front End Clunk Noise Recording (http://www.camaro5.com/forums/showthread.php?t=253979)

blackswan 10-05-2012 07:45 PM

Front End Clunk Noise Recording
 
Frustrated about the replacement of struts, mounts, bumpers, sway bar end links and bushing being replaced and now I actually have more noise. Some have referred to it as a popping noise http://www.camaro5.com/forums/showthread.php?t=49036 and there are other noises some are complaining about that i don't think are the same. So I recorded it best I can, hope this is useful to see if there's a commonality and we can get together potentially for a joint approach to GM on this issue. My dealer has tried their best, but I'm starting to think it's a parts issue.

See attachment for the sound - is it what you hear?

http://www.mediafire.com/?s94853d359d3kg5

JusticePete 10-05-2012 07:48 PM

That tink?

Angrybird 12 10-05-2012 07:51 PM

Quote:

Originally Posted by blackswan (Post 5659685)
Frustrated about the replacement of struts, mounts, bumpers, sway bar end links and bushing being replaced and now I actually have more noise. Some have referred to it as a popping noise http://www.camaro5.com/forums/showthread.php?t=49036 and there are other noises some are complaining about that i don't think are the same. So I recorded it best I can, hope this is useful to see if there's a commonality and we can get together potentially for a joint approach to GM on this issue. My dealer has tried their best, but I'm starting to think it's a parts issue.

See attachment for the sound - is it what you hear?

My 2010 V6 Coupe had a clunk or thump when going over bumps. My 2012 convertible is solid and quiet. The noise on the 10 started almost from the time I drove off the lot. My 12 now has almost 6,000 miles and is still solid. When did yours first started clunking?

JusticePete 10-05-2012 08:07 PM

Quote:

Originally Posted by Angrybird 12 (Post 5659708)
My 2010 V6 Coupe had a clunk or thump when going over bumps. My 2012 convertible is solid and quiet. The noise on the 10 started almost from the time I drove off the lot. My 12 now has almost 6,000 miles and is still solid. When did yours first started clunking?

Noise threads tend to get cluttered. If you have already listened to his MP3 file with the noise, can you confirm that what you heard on the MP3 is the same as your clunk?

blackswan 10-05-2012 08:09 PM

Quote:

Originally Posted by JusticePete (Post 5659700)
That tink?

No, those are my keys :) I ran the audio through a noise filter, but was unable to get rid of that tink without losing some of the awesome lumber sound. If you aren't hearing it (it's throughout most of the audio) then you may not have enough bass from your computer's speakers. It mostly comes out of my subwoofer on my computer and seems to be in the 100-300hz range. Decent headphones might let you hear it.

blackswan 10-05-2012 08:15 PM

Quote:

Originally Posted by Angrybird 12 (Post 5659708)
My 2010 V6 Coupe had a clunk or thump when going over bumps. My 2012 convertible is solid and quiet. The noise on the 10 started almost from the time I drove off the lot. My 12 now has almost 6,000 miles and is still solid. When did yours first started clunking?

Mine was very quiet until about 800 miles on it. It got progressively worse over time.

I had a shop disconnect the front sway bar end links and secure the bar. I went for a drive and it was quiet again. So dealer replaced end links and sway bar bushing and gave it back to me. Noise was back. I told them thanks for trying, and they gave it one more shot by replacing the struts, mounts and bumpers. Was quiet for about 50 miles and now, about 300 miles later, it's REALLY bad. Makes the noise on highway joints and such.

This weekend I'm going to check fasteners all around, again. Also going to disconnect end links, again. I'm curious if it's just the sway bar.

There is one oddity - when it goes to the dealer and they put it on the lift, it appears that the noise is substantially reduced for the drive home. Next day, it's back. Unsure if it's some exotic thing with the strut innards, spring positioning/settling... WHO KNOWS!

If it does not do it in the convertible, perhaps the strut brace helps here. I'm willing to try, but tempted just to trade on a 2013 and pick up MyLink, quad exhaust, etc. Thing is, if the new one makes this noise I will be bumm'n. BUT, then I would be willing to take her to Pedders!

Angrybird 12 10-05-2012 08:16 PM

Quote:

Originally Posted by JusticePete (Post 5659760)
Noise threads tend to get cluttered. If you have already listened to his MP3 file with the noise, can you confirm that what you heard on the MP3 is the same as your clunk?

Well I can't hear it on my iPod speaker. I don't have my earphones. I was just guessing since he described it as a clunk.

JusticePete 10-05-2012 08:24 PM

Quote:

Originally Posted by blackswan (Post 5659763)
No, those are my keys :) I ran the audio through a noise filter, but was unable to get rid of that tink without losing some of the awesome lumber sound. If you aren't hearing it (it's throughout most of the audio) then you may not have enough bass from your computer's speakers. It mostly comes out of my subwoofer on my computer and seems to be in the 100-300hz range. Decent headphones might let you hear it.

Laptop speakers aren't going t cut it. Monday at the office.

blackswan 10-05-2012 08:57 PM

1 Attachment(s)
Ok, try this version, filtered a little more. Again, it's mostly in the low frequency. I am going to try to capture it again tomorrow, including putting the recorder on the a-arm and sway bar.

What you're listening to is me driving 30mph over some evenly spaced cracks in a local road.

blackswan 10-05-2012 09:00 PM

Quote:

Originally Posted by JusticePete (Post 5659816)
Laptop speakers aren't going t cut it. Monday at the office.

Yeah, I just played in on my laptop and you won't hear it all on those. Perhaps load it onto iPod/Phone/mp3player and play in the car. I might do that just to see if I"m close on the sound LOL!

AdamEL 10-06-2012 01:09 AM

Hey Blackswan, for some reason I can't get your .zip file to work on my pc. But without hearing it myself, have you looked into the anti-lock brakes? When the car first takes off, the anti-lock brakes perform a self-test which is heard as a "clunking" sound that comes from under the car. Sometimes you can even feel the brake pedal move very slightly at the same time the clunk happens. It's only supposed to do this once, but I will occasionally hear mine twice. From what I can tell from what you've written, it seems like it's more of a repetitious thing instead of a once or twice kind of thing with yours, but maybe the anti-lock brakes are performing that test multiple times and are malfunctioning. I could be, am probably am, way off base with this, but I figured it's at least worth throwing out there. Maybe have your dealer check that out next time around.

Renegade 10-06-2012 01:15 AM

Quote:

Originally Posted by blackswan (Post 5659908)
Yeah, I just played in on my laptop and you won't hear it all on those. Perhaps load it onto iPod/Phone/mp3player and play in the car. I might do that just to see if I"m close on the sound LOL!

That sounds like the best way to go get some beats headphones and listen to it on your ipod :thumbsup:

CWI 10-06-2012 04:09 AM

Quote:

Originally Posted by Renegade (Post 5660508)
That sounds like the best way to go get some beats headphones and listen to it on your ipod :thumbsup:

Why not use the earphones on the laptop? Should sound just as good as Ipod. :iono:

blackswan 10-06-2012 09:08 AM

Quote:

Originally Posted by AdamEL (Post 5660499)
Hey Blackswan, for some reason I can't get your .zip file to work on my pc. But without hearing it myself, have you looked into the anti-lock brakes? When the car first takes off, the anti-lock brakes perform a self-test which is heard as a "clunking" sound that comes from under the car. Sometimes you can even feel the brake pedal move very slightly at the same time the clunk happens. It's only supposed to do this once, but I will occasionally hear mine twice. From what I can tell from what you've written, it seems like it's more of a repetitious thing instead of a once or twice kind of thing with yours, but maybe the anti-lock brakes are performing that test multiple times and are malfunctioning. I could be, am probably am, way off base with this, but I figured it's at least worth throwing out there. Maybe have your dealer check that out next time around.

Hi, appreciate the tip, it's a good one but not applicable to my situation. I only wish it was just the ABS testing noise I am hearing. It happens all the time over rough/washboard type roads going 20-40 MPH.

Noises are such a bummer to diagnose/describe and/or fix. For instance, I mentioned to Chevy customer service that I can reproduce it easily by going over a rumble strip. They look up "rumble strip" and come up with a TSB about the torque converter and note my records.

The noise has been duplicated by dealer, they know exactly what I'm talking about, yet a proper fix alludes us. They have been trying, I can't imagine what else could be replaced/tightened at this point other than control arms, tie rod and steering rack. I doubt they'll do much more at this point.

blackswan 10-06-2012 09:08 AM

Quote:

Originally Posted by AdamEL (Post 5660499)
Hey Blackswan, for some reason I can't get your .zip file to work on my pc. ...

Do you mean you can't extract it or it won't play?

blackswan 10-06-2012 09:15 AM

See if this works better for you: http://www.mediafire.com/?s94853d359d3kg5

blackswan 10-08-2012 07:29 AM

Going to try again today with recorder down by floorboard

Chevrolet Customer Svc 10-08-2012 09:22 PM

Quote:

Originally Posted by blackswan (Post 5659685)
Frustrated about the replacement of struts, mounts, bumpers, sway bar end links and bushing being replaced and now I actually have more noise. Some have referred to it as a popping noise http://www.camaro5.com/forums/showthread.php?t=49036 and there are other noises some are complaining about that i don't think are the same. So I recorded it best I can, hope this is useful to see if there's a commonality and we can get together potentially for a joint approach to GM on this issue. My dealer has tried their best, but I'm starting to think it's a parts issue.

See attachment for the sound - is it what you hear?

http://www.mediafire.com/?s94853d359d3kg5

blackswan,

Thank you for your post. Please direct message me with your contact information and also VIN and mileage. I'd like to set up a case for this concern on your behalf.

Best,
Ashley
Chevrolet Customer Assistance

blackswan 10-28-2012 05:19 PM

Quote:

Originally Posted by Chevrolet Customer Svc (Post 5670194)
blackswan,

Thank you for your post. Please direct message me with your contact information and also VIN and mileage. I'd like to set up a case for this concern on your behalf.

Best,
Ashley
Chevrolet Customer Assistance

I appreciate the offer Ashley, but do you mind telling me what that will do for me? The dealer has tried to fix this many times and they say if I contact Chevy they will simply only direct me right back to them. If there isn't already a bulletin on the exact cause, it seems like nothing can be done. No dealership of any brand seems to want to really diagnose an issue such as this. However, I'm not concerned about potential parts failure and I imagine others with this annoying noise are wondering about that too.

JSC81 01-10-2013 07:06 AM

Well almost three years later and I have the front end noise. It has always had the clunk while say backing out of the driveway with the wheels turned over a bump. That I can live with but as of yesterday I hear what everyone has been upset about. Low speeds over slightly rough or refinished black top and she shows her ugly face. Sounds like the whole front end is going to fall out. My suspension is original and my only mods are exhaust and a CAI. Originally I thought just maybe my exhaust was hitting the brace again which I just put some washers in there to provide more clearance. I removed it and tested so it is the coming from the front suspension on an otherwise stock 2010 SS with 43,000 miles on it.

Has there been any recent resolve?

Angrybird 12 01-10-2013 08:19 AM

Quote:

Originally Posted by JSC81 (Post 6016876)
Well almost three years later and I have the front end noise. It has always had the clunk while say backing out of the driveway with the wheels turned over a bump. That I can live with but as of yesterday I hear what everyone has been upset about. Low speeds over slightly rough or refinished black top and she shows her ugly face. Sounds like the whole front end is going to fall out. My suspension is original and my only mods are exhaust and a CAI. Originally I thought just maybe my exhaust was hitting the brace again which I just put some washers in there to provide more clearance. I removed it and tested so it is the coming from the front suspension on an otherwise stock 2010 SS with 43,000 miles on it.

Has there been any recent resolve?

Like I said previously my 2010 coupe had it, at times the whole front end would vibrate and you could feel it in the steering wheel. I now have almost 8,000 miles on my 2012 convertible with no issues with any clunking. It may have to do with the strut tower brace, or other changes made to the convertible to stiffen the chassis. So far I am very satisfied.

blackswan 06-21-2013 07:31 PM

May be worth getting the stiffener.

JusticePete 06-21-2013 07:33 PM

The STB has nothing to do with the clunk. Nothing. I'll post detail later.

blackswan 06-21-2013 08:07 PM

Oh...lol.... Sorry. I meant that it may be worth getting in general.

Fast1 06-23-2013 08:46 AM

I have the exact same problem. It sounds like something's coming apart every time I drive over a small bump.


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