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Old 06-25-2014, 09:22 PM   #1
JacobC1983
 
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ZL1 Rear Suspension noise

Does anybody get a small but noticeable clunk noise when they go over potholes at very low speed? I hear it particularly from the right rear. I don't notice it at speed or on the highway, but with pulling up to a stoplight and going over a bump.
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Old 06-25-2014, 10:01 PM   #2
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Yeah, I notice this as well. Especially when I am going over a portion of the road that stair steps. I got under the car to see if I can find anything loose and I noticed the rear fascia is kind of loose in the middle, figured that may be rattling when I hit the breaks in the concrete, since nothing is really bracing the center section of it.
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Old 06-25-2014, 10:20 PM   #3
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Quote:
Originally Posted by JacobC1983 View Post
Does anybody get a small but noticeable clunk noise when they go over potholes at very low speed? I hear it particularly from the right rear. I don't notice it at speed or on the highway, but with pulling up to a stoplight and going over a bump.
JacobC1983,

I realize how displeasing it can be when faced with a rear suspension concern like this, and though you're seeking thoughts and opinions, I would be happy to communicate this situation with the designated Customer Experience Manager at your preferred dealer if you feel an official diagnosis is necessary. Feel free to message us privately if you'd like to proceed, or discuss this situation further.

Kindly,

William R.
Chevrolet Customer Care
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Old 06-25-2014, 10:40 PM   #4
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take a look at the cooling pipe of the differential on the right side. the segment near the joint of the rubber tubing to the metallic pipe may be vibrating against the heat shield when hitting road bumps. if the piping is to close to the heat shield, just bend the shield.
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Old 06-26-2014, 06:36 AM   #5
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Thanks for the thoughts, I will take a look this evening.

I really don't want to take my vehicle to the dealership. They are so behind with recalls, one dealer keeps the car for 2 days before they even get to it so it sits outside, and the other dealer books appointments 2 weeks away.
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Old 06-26-2014, 05:33 PM   #6
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Would you mind posting a picture where I should be looking at the heat shield meeting the rubber tubing. I tried to look for it and can't get all the way under the car to see where you are describing.. thank you!
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Old 06-29-2014, 10:48 AM   #7
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Bump for pic if possible. I have similar sound when driving over stair stepped concrete. Thx
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Old 06-29-2014, 11:59 AM   #8
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Same here.


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Old 08-20-2014, 12:12 AM   #9
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Any update on this? I noticed the same issue with my car and I do NOT get it on the drivers side rear only the passenger side rear. It is a fairly distinct "clunk" from that side when going over a bump...
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Old 08-20-2014, 05:23 AM   #10
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I don't get any kind of clunk in mine, other then I think magnet ride is so stiff, that the car is going to loosen up against itself, because somethings gotta give with a suspension so stiff.
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Old 08-20-2014, 07:53 AM   #11
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Still have mine, a member sent me pictures of part of the underside of the car he cut away. I wasn't able to get under the car to reach the area to even see where he had cut.
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Old 08-20-2014, 01:41 PM   #12
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Still have mine, a member sent me pictures of part of the underside of the car he cut away. I wasn't able to get under the car to reach the area to even see where he had cut.
So something is hitting another piece? After that is cut away the noise stops?
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Old 08-20-2014, 01:57 PM   #13
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same here, getting worse with time also. right rear, clunking sound, like a loose suspension component. dealer inspected and said all was okay. no idea what it could be.
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Old 08-20-2014, 03:30 PM   #14
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Quote:
Originally Posted by Samson2029 View Post
take a look at the cooling pipe of the differential on the right side. the segment near the joint of the rubber tubing to the metallic pipe may be vibrating against the heat shield when hitting road bumps. if the piping is to close to the heat shield, just bend the shield.
This is the presented solution, but I can't get under the car to try it.
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Old 08-20-2014, 10:23 PM   #15
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This is the presented solution, but I can't get under the car to try it.
That sounds kind of confusing... Did they send you a picture?
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Old 08-21-2014, 05:38 PM   #16
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Yes they did but I don't have it anymore --- I will send him a PM and ask him to post the directions in this thread w/ pics
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Old 08-21-2014, 07:49 PM   #17
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Yes they did but I don't have it anymore --- I will send him a PM and ask him to post the directions in this thread w/ pics
That would be awesome. I'd love to fix this. Very annoying..
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Old 08-22-2014, 05:08 AM   #18
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Rear Noise

My ZL1 was doing the same thing. I found just a little grease on my right muffler. I figured out it was the right rear CV joint leaking. Took it to the dealer, they replaced the CV joint and right side drive shaft. No more noise!
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Old 08-22-2014, 01:52 PM   #19
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My ZL1 was doing the same thing. I found just a little grease on my right muffler. I figured out it was the right rear CV joint leaking. Took it to the dealer, they replaced the CV joint and right side drive shaft. No more noise!
Interesting... in a '14?
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Old 08-22-2014, 07:26 PM   #20
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Quote:
Originally Posted by merrell13 View Post
My ZL1 was doing the same thing. I found just a little grease on my right muffler. I figured out it was the right rear CV joint leaking. Took it to the dealer, they replaced the CV joint and right side drive shaft. No more noise!
not another thing to be looking for
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Old 08-23-2014, 06:50 PM   #21
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I'm also getting a clunk noise, From a dead stop only though. I initially thought it was something in the trunk but I fear it's a loose suspension piece now.
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Old 08-24-2014, 08:34 AM   #22
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The only time I hear the clunk is driving slow over speed bumps.

I think this is obviously just something that happens on our cars and can conclude nothing is loose.
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Old 08-24-2014, 10:43 PM   #23
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The only time I hear the clunk is driving slow over speed bumps.

I think this is obviously just something that happens on our cars and can conclude nothing is loose.
I doubt that. I was testing it tonight on bumpy roads and the drivers side rear is completely silent while the passenger side clunks over almost all the bumps. It's pretty crappy, it definitely sounds like there is a problem.
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Old 08-25-2014, 08:32 PM   #24
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I looked under the car today and saw something I think might be making the noise. Looks like part of the axle might be coming in contact with a bolt. Something has worn a circle into it. What do you think?



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Old 08-26-2014, 07:16 PM   #25
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Any input?
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