So eons ago I converted my stock single exit to a dual exit from an SSEI on my 2005 SE, recently they began to rattle or make noise when i turn or hit bumps in the road. Since ive had this issue before i assumed it might be those black rubber insulators connecting the muffler to the bracket on the frame. Maybe my replacements were too cheap and not quality(since they were 5 bucks for two) as they still make the same noise... Any suggestions?

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2005 SE- Drop in K&N Filter,SSEI Exhaust conversion, MagnaFlow High-Flow Cat., SSL DD865BN Stereo,16 inch walmart wheel covers

Jack it up, and start banging it.

Your rattle should become apparent.

And, are you sure those are not hangers? If they are hangers, the exhaust should drop when they fail.

Also, check to make sure there isn't something actually rattling around inside the muffler.

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~Randall~


1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place

I have a rock in one of my mufflers which you can only hear occasionally.

Only way to figure this out is to get under there and smack it or wiggle it and see where the rattle is coming from. An easy way to do this would be to reverse the car onto the some ramps.

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-Car Guy Carl
"Penelope" - 2003 SLE - 247k Miles
"Sydney" - 2000 Honda S2000 - 98k miles

Ive rattled them around myself and there doesn't seem to be anything IN them but the little black whatchamacallits do sag abnormally, the look identical to the ones i took off as far as being worn. Which is confusing as they were brand new.. I was thinking about going for the metal hangers but i dont know the first think about installing them

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2005 SE- Drop in K&N Filter,SSEI Exhaust conversion, MagnaFlow High-Flow Cat., SSL DD865BN Stereo,16 inch walmart wheel covers

The way I put mine together (SSEi exhaust on SE), mine rattles when I go a bit too hard over a bump while turning - while backing out of a driveway, for example. It only rattles when the front end goes over the bump. I think the noise comes from the pipe (after the resonator, right before the y-pipe) banging against the metal bracket that is bolted to the car, which surrounds 1/2 of the pipe. Sometimes it sounds like the noise comes from the muffler area, but when I had to take both off a month or so ago, no noise came from the muffler. The rubber part of the hooks could be allowing your exhaust to move around enough to hit something underneath and make the noise you describe.

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'02 Pontiac Bonneville SE 108,539 miles, N/A, SSEi exhaust system, boat roller mount. Gone, but not forgotten.
'13 Buick Regal GS 102k miles, 270 hp, 295 lb/ft, ZZP intake.
(yes, there is a story behind my avatar.)

Yeah you're on to something because i can wiggle it side to side freely like nothings holding it, im gonna get some better quality rubber hangers to see if it continues. Also this is unrelated but since we're talking exhaust why not, my cat has gone bad and has been for ages but i was thinking about going with the zzp catless downpipe since emission regulations are non existent in my area and i can go for more sound. Is there anything else i would need to make the code go away?

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2005 SE- Drop in K&N Filter,SSEI Exhaust conversion, MagnaFlow High-Flow Cat., SSL DD865BN Stereo,16 inch walmart wheel covers

I have not been under the last Gen Bonneville to investigate the exhaust. I did have an exhaust rattle on the '92 I had. It was a slightly loose bolt on a heatshield. It was stripped when an alignment was done on the car. The alignment tech was jerking and pulling on the exhaust to get to the rear suspension. I found it while trying to fix another problem. I just put in a larger self tapping bolt. Hopefully it is an easily repaired loose heatshield. - BC

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In Memory of Brad - 1/21/1977 .. 10/23/2013 ...... Aaron - 1977 .. 2017 .....
2017 Hyundai Santa Fe Sport ..... 1992 Bonneville SSE 1SB 170 HP L27 4T60E retired/sold to MattStrike ..... 2005 Bonneville SE 1SC 205 HP L36 4T65E - retired/salvage yard ..... PBCF user 2321

It may be a bad heatshield, it was common on older cars... My old Cutlass Supreme had that issue.