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Clunk started in the rear on mine now. Only heard at slow speeds and can easily be reproduced in parking lots where the pavement isn't glass smooth. Have an appointment to take it in Friday but I'm worried. Just moved to Frisco, Texas and you don't see this car down here. It's like a unicorn LOL.
Please let us know if they found the problem. My guess is it's an easy fix, and it's not the shocks, although that's the first thing they will replace. I'm wondering if the problem started after the battery shield installation. I can't remember whether I had the noise before that upgrade. I held off doing it, feeling I'd leave well enough alone and was worried about mechanics more proficient on ICE cars working on it. Volts are not that rare around her, but I'm amazed on the days I see more Telsa's than Volts.
 
Please let us know if they found the problem. My guess is it's an easy fix, and it's not the shocks, although that's the first thing they will replace. I'm wondering if the problem started after the battery shield installation. I can't remember whether I had the noise before that upgrade. I held off doing it, feeling I'd leave well enough alone and was worried about mechanics more proficient on ICE cars working on it. Volts are not that rare around her, but I'm amazed on the days I see more Telsa's than Volts.

Finally got the car in. It was a bad shock. Won't have her back for a bit though because they are working on other things. I'll let you know if the replacement fixes it.
 
Finally got the car in. It was a bad shock. Won't have her back for a bit though because they are working on other things. I'll let you know if the replacement fixes it.
Hopefully that will be the fix, but I've read where others have had their mechanics replace the shocks, only to have the noise return. At this point I have only 5000 miles left on my lease and 10 months, and I'm wondering if I should just live with it.
 
also check how tight the latch bolts are for the hatch latch, there is a recent report of them being loose on one vehicle,
I too have that "clack" sound in the back right. My car is less than two months old! I believe it is the hatch latch stop bolts, but I believe the rivets that had hold the bolts to the car, are not tight and therefore rattle over bumps. Will have my wife drive and I'll sit in the back to see if that's where it's coming from. If I take the bolt out, the noise should go away. Not a fix, Just want to try isolate the problem ... Will let you know what I hear.
 
Okay, a quick trip around the pothole infested Illinois streets where i live and here is what I discovered... The hatchback plastic bolt stops screw out. I removed the right one and "poof" the clack sound was gone. I screwed it back in and back was the clack sound. Again, I don't think the little plastic stop is defective, the clamp it screws into is bolted loosely into the hatch and makes the clack sound when the car hits a bump. Mine only makes the sound when the right side of the car hits the bump.

I would suggest you open the hatch, unscrew the plastic stop and take a test drive. If the sound is still there, it might be the strut or something else, but if its gone, you know it's the stop. I will contact the dealer on Monday to see what they can do to correct the problem. Good luck!
 
Discussion starter · #28 ·
Finally got the car in. It was a bad shock. Won't have her back for a bit though because they are working on other things. I'll let you know if the replacement fixes it.
Please let us know if that ends up being the problem. I had mine diagnosed as the same, and after replacing both rear shocks the sound is still there. They cannot figure out what the sound is, and as my chassis warranty is up I'm not inclined to keep paying them to replace part after part until they find it.
 
Please let us know if that ends up being the problem. I had mine diagnosed as the same, and after replacing both rear shocks the sound is still there. They cannot figure out what the sound is, and as my chassis warranty is up I'm not inclined to keep paying them to replace part after part until they find it.
Well, you guys were right. The shock was replaced and the noise is back. Going back in Thursday.
 
I adjusted the hatch stops as mentioned, unscrewing them out a bit. Very little movement now when pulling up on the bottom lid of the closed hatch. I'm not yet sure the noise is gone, but will check more thoroughly tomorrow. That said, I'd swear the noise is coming from the bottom of the car, near the shock, not the lid area.
 
Well they replaced both clamps that the plastic stops screwed into (left and right sides). The plastic pieces are now tight against the hatch with no play in them. The little rubber/plastic stops screw into them and the clack noise is gone! CHRG UP 1 is quiet once again!

If you can put your fingernail under the plastic piece and move it up and down, its too loose. have them replace the plastic rivets that hold them in. I hope you find your issue quickly.
 
Well they replaced both clamps that the plastic stops screwed into (left and right sides). The plastic pieces are now tight against the hatch with no play in them. The little rubber/plastic stops screw into them and the clack noise is gone! CHRG UP 1 is quiet once again!

If you can put your fingernail under the plastic piece and move it up and down, its too loose. have them replace the plastic rivets that hold them in. I hope you find your issue quickly.
Tightening them up on mine didn't do much for me after all. The clunk is still there. It's a low pitched sound. Probably not the same type sound as the hatch rattling. Still sounds like it's coming from the shock area. It remains a mystery!
 
Discussion starter · #33 ·
NoRegrets - any update from the dealer?

I fiddled with my hatch stops; tightened them, loosened them, and removed them even; no change whatsoever. My sound still sounds like a shock, only the shock has been replaced without any change. It's baffling to me.
 
NoRegrets - any update from the dealer?

I fiddled with my hatch stops; tightened them, loosened them, and removed them even; no change whatsoever. My sound still sounds like a shock, only the shock has been replaced without any change. It's baffling to me.
Nope. They said nothing is wrong and couldn't replicate the noise. I've given up on trying to make this car quality and am just trying to get through the lease.
 
Nope. They said nothing is wrong and couldn't replicate the noise. I've given up on trying to make this car quality and am just trying to get through the lease.
Afternoon NoRegrets78,

I apologize that the dealer was unable to replicate the noise concern. Did the dealership contact the technical team?

-Ian Chevrolet EV Customer Service
 
Afternoon NoRegrets78,

I apologize that the dealer was unable to replicate the noise concern. Did the dealership contact the technical team?

-Ian Chevrolet EV Customer Service
To my knowledge they did. The clunk is still there. Thinking about taking to another dealer. It's extremely annoying.
 
Just went under the car myself. My theory of coil bind is out, they are linear springs. That is a common issue with progressive springs because of the proximity of the closer coils. They are very noisy if you don't use isolation rubber. The shock they replaced was that side, confirmed. I cannot for the life of me figure out what the noise is back there.
 
Discussion starter · #38 ·
Just went under the car myself. My theory of coil bind is out, they are linear springs. That is a common issue with progressive springs because of the proximity of the closer coils. They are very noisy if you don't use isolation rubber. The shock they replaced was that side, confirmed. I cannot for the life of me figure out what the noise is back there.
Same issue here. I've been under the car a number of times; everything is tight, bushings look and feel as they should, nothing is loose. I can't replicate the noise when the car is at a standstill. But it's driving me crazy when I drive the vehicle around.
 
Same issue here. I've been under the car a number of times; everything is tight, bushings look and feel as they should, nothing is loose. I can't replicate the noise when the car is at a standstill. But it's driving me crazy when I drive the vehicle around.
I'm glad I'm not the only one. I emailed my Volt advisor. I'm calling in the big guns now.
 
Yeah, I did the same thing. Went to two dealer service facilities, both with condescending service personnel that were no help. I also jacked up the car myself and started checking for loose components. Everything looks in order.

The Volt is high on the list of replacement cars when this lease is up in less than 10 months, but I'm also starting to consider other options. Test drove a Ford C-Max and took a close look at the Lexus CT200h, which was way too small compared to the Volt or C-Max.
 
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