Frustrating rear end rattle? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

jachevy28 · 09-07-2010, 10:45 PM

Shot in the dark for thoughts....a few weeks ago I started getting a light rattle in the far rear of the vehicle, sort of sounds like a thin piece of metal bouncing around in a coffee can. It's worse when the car is warmed up, and it only occurs under light (not full throttle) acceleration. It's loudest about 45 mph in 3rd gear at half throttle, but also audible in 1st and 2nd....dies down a bit the higher the gear after that. Does not occur under deceleration, going over bumps, idle, neutral, etc.

The dealer checked for anything loose under there and didn't find anything...said it must be the aftermarket exhaust (my first thought). I replaced the mufflers on the exhuast, checked clearances, heat shields, etc. and that didn't do it...so, what would a differential or rear gear rattle sound like? Would the above description fit? Would there be any other symptoms, because everything else seems normal.

Kinda at my wits end trying to figure out where it's coming from.

KnightRiderSS · 09-07-2010, 10:49 PM

Does the exhaust have enough clearance above the cross memeber?

Did the dealer check for missing spoiler nuts?

jachevy28 · 09-08-2010, 06:27 AM

Yeah, plenty of cross member clearance, and it's not the spoiler nuts.

t.c.tam · 09-08-2010, 10:43 AM

did you check the heat shield?

http://www.camaro5.com/forums/showth...shield+exhaust

thekid96 · 09-08-2010, 11:36 AM

I had an internal piece of a muffler break loose recently and it sounded exactly like what you are experiencing. I spent a couple days hunting for loose fittings, something hitting, etc. I finally had to pull the exhaust off and instantly figured it out.

flyby · 09-08-2010, 06:05 PM

My bet would be something actually in one of the mufflers.

mbrusco103 · 09-21-2010, 01:35 AM

when installing my friends exhaust in his camaro there was a noise that it was making and after checking everything we eventually found a coin that was stuck in between the rear seats seatbelt harness and the seat itself.
good luck!

09-07-2010, 10:45 PM	#1
jachevy28 Camaro. Is. Life. Drives: 2016 1SS Join Date: Oct 2008 Location: Greer, SC Posts: 278	Frustrating rear end rattle? Shot in the dark for thoughts....a few weeks ago I started getting a light rattle in the far rear of the vehicle, sort of sounds like a thin piece of metal bouncing around in a coffee can. It's worse when the car is warmed up, and it only occurs under light (not full throttle) acceleration. It's loudest about 45 mph in 3rd gear at half throttle, but also audible in 1st and 2nd....dies down a bit the higher the gear after that. Does not occur under deceleration, going over bumps, idle, neutral, etc. The dealer checked for anything loose under there and didn't find anything...said it must be the aftermarket exhaust (my first thought). I replaced the mufflers on the exhuast, checked clearances, heat shields, etc. and that didn't do it...so, what would a differential or rear gear rattle sound like? Would the above description fit? Would there be any other symptoms, because everything else seems normal. Kinda at my wits end trying to figure out where it's coming from.

09-07-2010, 10:49 PM	#2
KnightRiderSS Voodoo Medicine Man Drives: Black 2SS with RS package Join Date: Jul 2010 Location: IL Posts: 917	Does the exhaust have enough clearance above the cross memeber? Did the dealer check for missing spoiler nuts? __________________

09-08-2010, 10:43 AM	#4
t.c.tam Drives: 2011 Camaro LS Join Date: Aug 2010 Location: TX Posts: 79 View My Garage	did you check the heat shield? http://www.camaro5.com/forums/showth...shield+exhaust __________________ Ordered 8/7/2010 (1100) Preliminary order accepted 8/16/2010 (2500) Order preferenced 8/18/2010 (3400) Order broadcast 8/25/2010 TPW 8/30/2010 (3800) Order produced 8/31/2010 In-Transit from Osh 9/1/2010 9/15/2010 Delivered!!

09-21-2010, 01:35 AM	#7
mbrusco103 Drives: 2011 2SS/RS (M6) 427 Twin Turbo Join Date: May 2008 Location: NJ Posts: 1,090 View My Garage	when installing my friends exhaust in his camaro there was a noise that it was making and after checking everything we eventually found a coin that was stuck in between the rear seats seatbelt harness and the seat itself. good luck! __________________ 2011 Camaro 2SS/RS ERL 427 M6 TT -AGP Twin Turbo 55/57 .83ar \| ERL 427ci \| Squash Fuel System \| Stainless Works Chambered 3" \| Mcleod RXT \| Factory Hurst Short Throw \| Black Forgestar F14s \| CTS V 6 Piston Brembo \| VIS AMS Carbon Fiber Hood \| Anvil Carbon Fiber Spoiler

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
5th Gen Suspension -- The Book	JusticePete	Suspension / Brakes / Chassis	151	05-07-2015 06:52 PM
Rear End Noise when enabling/disabling TC/Stabilitrack	Swytch	Camaro Issues / Problems \| Warranty Discussions \| TSB and Recalls	0	06-03-2010 01:08 PM
Richmond Rear End Gears - 3.73 & 4.10	Sean@Phastek	Transmission / Driveline	0	06-02-2010 11:47 AM
rear end failure?	xshortd	Camaro Issues / Problems \| Warranty Discussions \| TSB and Recalls	1	04-08-2010 07:59 PM
Rear end whine while under load	shiftz33	5th Gen Camaro SS LS LT General Discussions	4	08-12-2009 05:15 PM

09-08-2010, 06:27 AM	#3
jachevy28 Camaro. Is. Life. Drives: 2016 1SS Join Date: Oct 2008 Location: Greer, SC Posts: 278	Yeah, plenty of cross member clearance, and it's not the spoiler nuts.

09-08-2010, 11:36 AM	#5
thekid96 Drives: Z06, 69 Camaro Join Date: Oct 2009 Location: Orange County Posts: 197	I had an internal piece of a muffler break loose recently and it sounded exactly like what you are experiencing. I spent a couple days hunting for loose fittings, something hitting, etc. I finally had to pull the exhaust off and instantly figured it out.

09-08-2010, 06:05 PM	#6
flyby Drives: 2010 Silver SS Join Date: Sep 2009 Location: Glen Gardner, NJ Posts: 1,339 View My Garage	My bet would be something actually in one of the mufflers.