Vibration/rattle in the interior - ZL1

FoundNemo · 12-05-2019, 08:00 AM

There is a notable vibration/rattle when the exhaust drones a bit that sounds like its coming from the back seats/window area. Havent been able to track it down yet but has anyone else noticed this? Its very loud at certain frequencies and I already put some Dynamat on the roof metal and such under the headliner but no change there, so not sure what it is yet. Wasnt sure if this is common. I'm all stock, 2018 ZL1 A10 or any interior panels/changed/removed.

LT4Greg · 12-05-2019, 09:14 AM

Yes my 2017 has it too but not bad! I do have the exhaust set on Track mode and fuse pulled for the NPP.

PROMETHEUS · 12-05-2019, 10:01 AM

That is some item of the interior is resonating at the same frequency as the exhaust. My interior does the same thing occasionally! I don't think it is anything to worry about, IMHO.

Can'tHave2MuchHP · 12-05-2019, 10:10 AM

From what you're describing, my car also does the same thing...Usually I encounter it if I'm rolling on the highway at 60 or so and want to accelerate to pass but only barely increase the throttle and it drops 1-2 gears and the revs are 3000 or so maybe and it makes a rattling noise until the load drops off. It did it with the stock suitcase and now with my Corsa. I don't think there's a way to change it. What I do now is drop a few gears by aggressively blipping the throttle before accelerating at a slightly increased throttle position over cruise. Works great and sounds better.

69pro-touring · 12-05-2019, 07:58 PM

I've noticed this as well for a long time, checked all the trim around the area and couldn't find any source of noise. Sounds to me almost like the glass itself vibrating.

FoundNemo · 12-06-2019, 06:27 AM

Thx folks. Was hoping it was something that could be tamed with some Dynamat. Maybe not :(

BigumZL1 · 12-06-2019, 07:53 AM

I think I have the same issue, but I can also hear the buzz if I have loud bass in my music as well.

Gunkk · 12-06-2019, 08:08 AM

FYI see here about rear speaker rattle and recommended fix:

https://www.camaro6.com/forums/showthread.php?t=454100

viurniel · 12-06-2019, 08:22 AM

Just put the volume up on the radio... oldest fix in the book.

FoundNemo · 12-06-2019, 09:16 AM

Quote:

Originally Posted by Gunkk

FYI see here about rear speaker rattle and recommended fix:

https://www.camaro6.com/forums/showthread.php?t=454100

Ty!

17CamaroZL1 · 12-06-2019, 10:08 AM

Quote:

Originally Posted by viurniel

Just put the volume up on the radio... oldest fix in the book.

It really does work wonders.

17CamaroZL1 · 12-06-2019, 10:11 AM

I think I had this speaker rattle or something as well, but I've not noticed it in quite a while. Now I hear a squeaky sound every time I change the load on the rear like speeding up or simply letting off the throttle. I'm picturing a trailing arm bushing that's causing it, but I'm not sure.

collinms · 12-09-2019, 07:37 AM

Mine is doing this as well. Only sometimes though. It sounds like it's the rear windshield or maybe plastic trim hitting the glass? Idk, but it's really annoying. I normally drive with the windows down so I rarely hear it but now that it's cold.... My issue isn't the speaker like someone posted. This noise comes from high up near rear windshield.

FoundNemo · 12-09-2019, 12:22 PM

Quote:

Originally Posted by collinms

Mine is doing this as well. Only sometimes though. It sounds like it's the rear windshield or maybe plastic trim hitting the glass? Idk, but it's really annoying. I normally drive with the windows down so I rarely hear it but now that it's cold.... My issue isn't the speaker like someone posted. This noise comes from high up near rear windshield.

Same here for me.

12-05-2019, 08:00 AM	#1
FoundNemo Drives: 2019 ZL1 Join Date: Oct 2019 Location: GA Posts: 573	Vibration/rattle in the interior - ZL1 There is a notable vibration/rattle when the exhaust drones a bit that sounds like its coming from the back seats/window area. Havent been able to track it down yet but has anyone else noticed this? Its very loud at certain frequencies and I already put some Dynamat on the roof metal and such under the headliner but no change there, so not sure what it is yet. Wasnt sure if this is common. I'm all stock, 2018 ZL1 A10 or any interior panels/changed/removed.

12-05-2019, 09:14 AM	#2
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,809	Yes my 2017 has it too but not bad! I do have the exhaust set on Track mode and fuse pulled for the NPP. __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

12-06-2019, 10:11 AM	#12
17CamaroZL1 Life's Short, Live Fast! Drives: 2017 Hyper Blue A10 ZL1 Join Date: Nov 2016 Location: London, KY Posts: 2,015	I think I had this speaker rattle or something as well, but I've not noticed it in quite a while. Now I hear a squeaky sound every time I change the load on the rear like speeding up or simply letting off the throttle. I'm picturing a trailing arm bushing that's causing it, but I'm not sure. __________________ Life's Short, Live Fast! https://youtu.be/rTUv2p4T7OA 10.94 at 128 mph, 11.13 at 127mph 870 DA, https://youtu.be/e_X_LcpFp50 11.19 at 127mph 1100 DA, https://youtu.be/OXQiCQdQuH4 11.40 at 125mph 1800 DA https://youtu.be/uWba1qs8M6Q 11.52 at 123mph 3500 DA TZQPHG '17 ZL1 HBM\|A10\|Nav\|PDR\|CFW Hood\|ZL1 Mats 12/26/2016 Ordered! 2/8/2017 Built!! 3/2/2017 Brought Home!!!

12-05-2019, 10:01 AM	#3
PROMETHEUS Drives: 2019 ZL-1, Shadow Gray, Sold Join Date: Jan 2019 Location: Fredericksburg, VA Posts: 1,390	That is some item of the interior is resonating at the same frequency as the exhaust. My interior does the same thing occasionally! I don't think it is anything to worry about, IMHO.

12-05-2019, 10:10 AM	#4
Can'tHave2MuchHP Drives: Fast Join Date: Mar 2015 Location: Michigan Posts: 3,696	From what you're describing, my car also does the same thing...Usually I encounter it if I'm rolling on the highway at 60 or so and want to accelerate to pass but only barely increase the throttle and it drops 1-2 gears and the revs are 3000 or so maybe and it makes a rattling noise until the load drops off. It did it with the stock suitcase and now with my Corsa. I don't think there's a way to change it. What I do now is drop a few gears by aggressively blipping the throttle before accelerating at a slightly increased throttle position over cruise. Works great and sounds better.

12-05-2019, 07:58 PM	#5
69pro-touring Drives: 2017 ZL1 6MT Join Date: Dec 2018 Location: Louisiana Posts: 43	I've noticed this as well for a long time, checked all the trim around the area and couldn't find any source of noise. Sounds to me almost like the glass itself vibrating.

12-06-2019, 06:27 AM	#6
FoundNemo Drives: 2019 ZL1 Join Date: Oct 2019 Location: GA Posts: 573	Thx folks. Was hoping it was something that could be tamed with some Dynamat. Maybe not :(

12-06-2019, 07:53 AM	#7
BigumZL1 Drives: 2017 ZL1 Summit White Join Date: Mar 2019 Location: MD - DC area Posts: 51	I think I have the same issue, but I can also hear the buzz if I have loud bass in my music as well.

12-06-2019, 08:08 AM	#8
Gunkk Thank you Al Oppenheiser! Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017 Location: Sarasota, FL Posts: 4,973 View My Garage	FYI see here about rear speaker rattle and recommended fix: https://www.camaro6.com/forums/showthread.php?t=454100

12-06-2019, 08:22 AM	#9
viurniel @viurniel Drives: 19 ZLE A10, 15 2SS, 90 300ZXTT Join Date: May 2016 Location: Miami Posts: 409	Just put the volume up on the radio... oldest fix in the book.

12-09-2019, 07:37 AM	#13
collinms Drives: 2017 ZL1 A10 Summit White Join Date: Apr 2018 Location: Cumming, Georgia Posts: 511	Mine is doing this as well. Only sometimes though. It sounds like it's the rear windshield or maybe plastic trim hitting the glass? Idk, but it's really annoying. I normally drive with the windows down so I rarely hear it but now that it's cold.... My issue isn't the speaker like someone posted. This noise comes from high up near rear windshield.

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