Exhaust Banging on floor under trunk - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

caperss · 06-15-2010, 06:21 PM

Does anyone else have that annoying banging on the floor (right rear) when hitting a bump? I've looked under the car and pulled on the exhaust but I dont see anything obvious. However when I hit a good sharp bump it sounds like the right rear muffler is hitting the trunk floor. Anyone else have this? Thanks Caperss

floraneg · 06-15-2010, 06:24 PM

That is funny. I started to notice the same thing yesterday. It seems to be getting worse. I haven't had a chance to get under the car, but it does feel as something is wrong!

TripleB · 06-15-2010, 06:37 PM

aftermarket?

cause i put an aftermarket on mine and it was rattling on the tunnel brace underneath. i took it back and they tightened up on the tunnel brace. it stopped. then the other day it started again. :(

i posted on here and others said to use washers and it'll stop, or upgrade the tunnel brace.

floraneg · 06-15-2010, 06:47 PM

Mine is stock, no aftermarket parts to cause it.

|BLACKSS| · 06-15-2010, 07:25 PM

i would like to know to i have resonator w/x pipe and muffler delete and i have a rattle noise on sharp bumps (driving me nuts)

bi11ymc · 06-15-2010, 08:04 PM

My car is new and does this. I haven't taken it back to the dealer to adjust because I am replacing the entire exhaust with Doug Thorley shorties, Magnaflow cats, and Borla Touring cat-back.

Don O · 06-15-2010, 08:59 PM

Quote:

Originally Posted by |BLACKSS|

i would like to know to i have resonator w/x pipe and muffler delete and i have a rattle noise on sharp bumps (driving me nuts)

Hitting the tunnel brace. BTDT. Need to loosen all the clamps and jack the exhaust really high and retorque the clamps. It will settle down some but you have to have clearance above the tunnel brace. I bought an Elite Engineering tunnel brace to give me more clearance.

Don O

naga · 06-15-2010, 09:11 PM

I had the same problem in my rear right exhaust... when i reach a certain RPM (1800) i get a vibration/rattling noise... I took it to the dealer and explain it to my service manager and told him to send someone with me for a test drive.. As soon as the guy heard it he said he can fix it, if they can’t they will replace my right exhaust… now I’m running on a brand new rear exhaust... ever since I have never had a problem….
I would recommend that if anyone one wants to explain anything to a service manager plss take them for a test drive and show them the actual problem…

JS · 06-16-2010, 12:00 AM

YEPPERS, my edelbrock x and magna comp axleback it rattling
I am going to tweek it this week, did a customers car and its rattling too..

They cant make anything right nowadays...

TripleB · 06-16-2010, 01:15 AM

A friend told me the output driveshaft bolts might be loose too..worth checking that out as well, just in case.

Slowhawk · 06-16-2010, 04:56 AM

Alot of times it's the crossbrace.It will sound like the back of the car. These cars flex a ton over bumps. I've tossed the brace a few times.

HeavyD · 06-16-2010, 12:02 PM

I have some noise too. I have an MBRP set. They include their own tunnel bracket that hangs down a bit lower. When I installed my exhaust I had about 7/8" space. Two weeks later it was down to 1/4 - 3/8. I know it is less now, but not touching. Over bumps I bet it is flexing enough to make some noise. I will have to tweek it again too one of these fine days.

Bentley78 · 06-16-2010, 01:41 PM

My corsa rattles on my tunnel brace as well, only started a month ago. It will vibrate and knock on the brace at 1100rpm in 6th gear.

caperss · 06-16-2010, 04:23 PM

WOW I guess this is a problem after all. My system is bone stock and now that I think about it, it only happens under certain types of bumps/situations and it would be at the times the car would be definately flexing and very well may be the tunnel brace(not loose but a clearence problem). I havent been under the car but would washers between the brace and the underbody help give more room between the pipes and the brace? would this lower the tunnel/brace to give more room? just a thought.

06-15-2010, 06:21 PM	#1
caperss Drives: 2010 camaro 2SS/RS red white stripe Join Date: Apr 2010 Location: Rockland, MA Posts: 23	Exhaust Banging on floor under trunk Does anyone else have that annoying banging on the floor (right rear) when hitting a bump? I've looked under the car and pulled on the exhaust but I dont see anything obvious. However when I hit a good sharp bump it sounds like the right rear muffler is hitting the trunk floor. Anyone else have this? Thanks Caperss

06-15-2010, 06:37 PM	#3
TripleB SoCal Mayhem Drives: 2017 2LT Hyper Blue Metallic Camaro Join Date: May 2009 Location: Lakewood, California Posts: 5,918 View My Garage	aftermarket? cause i put an aftermarket on mine and it was rattling on the tunnel brace underneath. i took it back and they tightened up on the tunnel brace. it stopped. then the other day it started again. :( i posted on here and others said to use washers and it'll stop, or upgrade the tunnel brace. __________________

06-15-2010, 08:04 PM	#6
bi11ymc "Silver Street" Drives: 2010 2SS/RS L99 Join Date: Oct 2009 Location: Franklin, TN Posts: 707	My car is new and does this. I haven't taken it back to the dealer to adjust because I am replacing the entire exhaust with Doug Thorley shorties, Magnaflow cats, and Borla Touring cat-back. __________________ Silver Street - 2010 Camaro 2SS/RS, SIM, Gray, Cyber Gray Rally Stripes, Polished Wheels, Automatic (L99) - 553 RWHP/510 RWTQ CAI Inc., ARH LT Headers with Cats, Borla Touring Cat-Back; Pfadt Coil Overs, Sway Bars, End Links, and Trailing Arms; Comp Cams Blower Cam, Dual Springs, Push-Rods, and Lifters; GM LS2 Lifter Trays, 6.2 MLS Head Gaskets, Crank Bolt, and LS2 Front Cover; 3-Bolt Conversion Timing Gear, Katech C5R Timing Chain, ARP LS2/LS3 Head Bolt Kit, Melling Hi Volume Oil Pump, TVS 2300 Supercharger (Black); Build by Vengeance Racing; Custom Tune by Vengeance Racing

06-16-2010, 12:00 AM	#9
JS Drives: 2010 Camaro SS Join Date: May 2010 Location: Phila,Pa. Posts: 557	YEPPERS, my edelbrock x and magna comp axleback it rattling I am going to tweek it this week, did a customers car and its rattling too.. They cant make anything right nowadays... __________________ SOLD 2010 Camaro 1SS/A6 12.59@111.31 Magnaflow Magnapack Axleback & Resonated X-Pipe/OBX LT Headers/Airaid Cold Air Kit/Injection Connection Tuned

06-16-2010, 01:15 AM	#10
TripleB SoCal Mayhem Drives: 2017 2LT Hyper Blue Metallic Camaro Join Date: May 2009 Location: Lakewood, California Posts: 5,918 View My Garage	A friend told me the output driveshaft bolts might be loose too..worth checking that out as well, just in case. __________________

06-15-2010, 06:24 PM	#2
floraneg Drives: 2010 1SS RS Join Date: Jul 2009 Location: New Orleans Posts: 61	That is funny. I started to notice the same thing yesterday. It seems to be getting worse. I haven't had a chance to get under the car, but it does feel as something is wrong!

06-15-2010, 06:47 PM	#4
floraneg Drives: 2010 1SS RS Join Date: Jul 2009 Location: New Orleans Posts: 61	Mine is stock, no aftermarket parts to cause it.

06-15-2010, 07:25 PM	#5
\|BLACKSS\| Drives: BLACK 1SS Join Date: Apr 2010 Location: SOUTHERN ILLINOIS Posts: 269	i would like to know to i have resonator w/x pipe and muffler delete and i have a rattle noise on sharp bumps (driving me nuts)

06-15-2010, 09:11 PM	#8
naga Always be positive!!! Drives: IMB 1ss/ MT Join Date: Jun 2010 Location: west palm beach/ FL Posts: 189	I had the same problem in my rear right exhaust... when i reach a certain RPM (1800) i get a vibration/rattling noise... I took it to the dealer and explain it to my service manager and told him to send someone with me for a test drive.. As soon as the guy heard it he said he can fix it, if they can’t they will replace my right exhaust… now I’m running on a brand new rear exhaust... ever since I have never had a problem…. I would recommend that if anyone one wants to explain anything to a service manager plss take them for a test drive and show them the actual problem…

06-16-2010, 04:56 AM	#11
Slowhawk Drives: 1999 Trans Am Join Date: Jul 2009 Location: Bridgewater,Ma Posts: 2,017	Alot of times it's the crossbrace.It will sound like the back of the car. These cars flex a ton over bumps. I've tossed the brace a few times.

06-16-2010, 12:02 PM	#12
HeavyD Drives: 1SSRS RY L99 Join Date: Aug 2009 Location: Ontario Posts: 1,329	I have some noise too. I have an MBRP set. They include their own tunnel bracket that hangs down a bit lower. When I installed my exhaust I had about 7/8" space. Two weeks later it was down to 1/4 - 3/8. I know it is less now, but not touching. Over bumps I bet it is flexing enough to make some noise. I will have to tweek it again too one of these fine days.

06-16-2010, 01:41 PM	#13
Bentley78 Rice Cooker Drives: Avalanche Z/71, 2010 Camaro2SS Join Date: Jun 2008 Location: Hawaii/Phoenix Posts: 591	My corsa rattles on my tunnel brace as well, only started a month ago. It will vibrate and knock on the brace at 1100rpm in 6th gear.

06-16-2010, 04:23 PM	#14
caperss Drives: 2010 camaro 2SS/RS red white stripe Join Date: Apr 2010 Location: Rockland, MA Posts: 23	WOW I guess this is a problem after all. My system is bone stock and now that I think about it, it only happens under certain types of bumps/situations and it would be at the times the car would be definately flexing and very well may be the tunnel brace(not loose but a clearence problem). I havent been under the car but would washers between the brace and the underbody help give more room between the pipes and the brace? would this lower the tunnel/brace to give more room? just a thought.

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