08-21-2012, 03:21 PM | #1 |
Drives: Black 2012 Camaro ZL1 #740 Join Date: Nov 2011
Location: Sherwood, Oregon
Posts: 68
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Noisy Aactuators on Exhaust Flaps
Anyone else notice noises coming from the actuators on the exhaust?
I have had it in 4 times for the same thing and they replaced the exhaust from the cads all the way back, and it still makes the same noise. You can hear a mechanical sound when you lightly give it gas and let off. Kind of a buzzing sound like the flaps are opening and closing.
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08-21-2012, 04:14 PM | #2 | |
BAD ZL1
Drives: 2013 VIN 48 Victory Red ZL1! Join Date: Jan 2012
Location: California
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08-21-2012, 04:19 PM | #3 |
Drives: Black 2012 Camaro ZL1 #740 Join Date: Nov 2011
Location: Sherwood, Oregon
Posts: 68
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It happens at slow speed or at idol when you slighty rev the motor
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08-21-2012, 04:53 PM | #4 | |
Drives: ZL1 #529 "El-Jefe" Join Date: Mar 2012
Location: Las Vegas, NV
Posts: 668
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I have an open RO with GM for the same problem.. Not enough vacuum to close them at low RMP's. GM engineer as tried to fix but they havent been able to. They have tried bigger vacuum boxes, it helps but doesnt close them completely. Car has been in the shop for 3 weeks now. Do you have an automatic? GM said it only happens with auto's. Last I heard they were going to order a new complete exhaust system from a 6speed manual to see if that would fix it, from the manifold to exhaust tips. |
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08-21-2012, 06:21 PM | #5 | |
Drives: 2017 Bright Yellow ZL1 6spd Join Date: May 2010
Location: Central MA
Posts: 642
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08-21-2012, 06:50 PM | #6 |
Drives: ZL1 #529 "El-Jefe" Join Date: Mar 2012
Location: Las Vegas, NV
Posts: 668
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Well then idk.. Maybe others don't notice it, don't care, or doesn't happen at all...I found it very annoying, especially coming from a $60k car.. My car was delivered in late April, I've only put 1k miles on it cause the noise bothered me so much. Other than a drive to the dealership, it stays parked the the garage until it gets fixed.. So sad...
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08-21-2012, 06:59 PM | #7 | |
YOOZ GOTA B FREKN KIDN ME
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The Zeldabeast! A True Road Warrior!
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08-21-2012, 07:01 PM | #8 | |
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listen close, you can here the flaps open and close, hope thats ok, cant here any buzzing, neil can you here it from video, let us know what happens |
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08-21-2012, 08:28 PM | #9 |
R6P Owner
Drives: 2000 Camaro SS Join Date: Dec 2008
Location: MS
Posts: 137
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Do you hear it inside the car? I've had the flapping noise since day one at about 35 to 40 mph. Have a auto, Thought it was one of the many stickers under the car, but pulled them off and it still there.
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08-21-2012, 10:21 PM | #10 |
Drives: 2010 Duramax; 2012 CTS-V Coupe Join Date: Apr 2012
Location: Houston, Tx
Posts: 387
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What you're hearing is the flappers vibrating in the exhaust tips. The Vette's do it as well. A light spring can cure this issue.
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08-21-2012, 10:59 PM | #11 |
Drives: 2012 ZL1 - #670 Join Date: Jun 2009
Location: Seminole, Fl.
Posts: 8,009
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I've never noticed any sound, and to not drive your car because of a noise ?
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08-22-2012, 07:09 AM | #12 |
Drives: 1968 Camaro, 2012 ZL1 Join Date: Nov 2011
Location: Aston, PA
Posts: 398
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My first mod was pulling the vacuum line and plugging it. I don't hear any weird noises now. Just a killer exhaust note.
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08-23-2012, 10:50 AM | #13 | |
Drives: Black 2012 Camaro ZL1 #740 Join Date: Nov 2011
Location: Sherwood, Oregon
Posts: 68
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It is an Auto...I was told I will hear something today. I will post what they say
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08-23-2012, 10:51 AM | #14 | ||
Drives: Black 2012 Camaro ZL1 #740 Join Date: Nov 2011
Location: Sherwood, Oregon
Posts: 68
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I don't hear it in the video, all i hear is the sweet sound of power!!!
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