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Generation III External Engine
LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories

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Old 11-15-2011, 06:13 PM   #1
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Default Simple exhaust rattle fix ...

The culprit was a broken exhaust hanger. The exhaust bend over the axle tube was right against the heat shield. You can see where "my welder" attempted a fix when he welded my drag bar mounts in, but it didn't last long ... basically, the ride home!

Click the image to open in full size.

Ordered a new exhaust hanger. Used ones were available, but why take a chance of it happening again ....

Click the image to open in full size.

Old hanger out ...

Click the image to open in full size.

New hanger in, but instead of bolting it in the stock position, I drilled new holes slightly to the left to give the exhaust more room to move away from the heat shield.

Click the image to open in full size.
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Old 11-15-2011, 07:02 PM   #2
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Cool beans. Exhaust rattles drive me nuts. I have one but I believe it is my DMH cutout.
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Old 11-15-2011, 07:06 PM   #3
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I realize it is a simple posting, but I thought someone might be able to benefit from it!
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Old 11-16-2011, 12:38 PM   #4
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How much was the new hanger? I'm guessing you got it from gm?
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Old 11-16-2011, 12:43 PM   #5
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Quote:
Originally Posted by BrianSF-GA View Post
I realize it is a simple posting, but I thought someone might be able to benefit from it!
it did help, thanks
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Old 11-16-2011, 12:44 PM   #6
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How much was the new hanger? I'm guessing you got it from gm?
The only place I could find them was GM Classic Parts ....

New ... http://www.gmclassicparts.com/EXHAUS...-_p_25157.html

Used ... http://www.gmclassicparts.com/EXHAUS...-_p_23176.html
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Ultra Marine 2008 Hummer H2 SUV, 393 bhp (Tow Truck)
Black Obsidian 2009 G37S Coupe, 7-Speed Auto, Michelin PSS's, 330 bhp (Wife's Toy)
Merlot Sunglo 2011 Harley Davidson Street Glide FLHX, 87 rwhp/103 rwt ... 107" build & more now underway
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Old 11-16-2011, 12:46 PM   #7
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it did help, thanks
Glad it did ... sometimes the simple how to's are hard to find.
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Ultra Marine 2008 Hummer H2 SUV, 393 bhp (Tow Truck)
Black Obsidian 2009 G37S Coupe, 7-Speed Auto, Michelin PSS's, 330 bhp (Wife's Toy)
Merlot Sunglo 2011 Harley Davidson Street Glide FLHX, 87 rwhp/103 rwt ... 107" build & more now underway
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Old 11-17-2011, 04:48 PM   #8
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Walker makes one and you can get it on summit. Its a nice piece and I think it was like 14 bucks... Its the same on the 3rd gens too so it may be listed under that
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Old 11-17-2011, 07:31 PM   #9
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Walker makes one and you can get it on summit. Its a nice piece and I think it was like 14 bucks... Its the same on the 3rd gens too so it may be listed under that
Is it a replacement for this one? I wish I had known that before I bought this one. Oh well, hopefully, that info will save some else a few dollars. Here is the part number so it will be picked up in a Google or LS1Tech search for someone.

GM Part # 10275709
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Black Obsidian 2009 G37S Coupe, 7-Speed Auto, Michelin PSS's, 330 bhp (Wife's Toy)
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Old 11-30-2011, 01:07 AM   #10
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It looks like summit just has the grommet which is why it would only be 13 bucks. It's under 3rd gens too.
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Old 02-18-2012, 07:35 AM   #11
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Advance Auto Parts has this item in Walker Part # 35648, around $15.00. Fits gen 3 cars too with V8. Keith
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Old 02-18-2012, 07:44 AM   #12
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gosh!!! great minds travel the same path!!! i'm just now ready to tackle my wore out hangers . thanks a million folks! oldman...
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Old 02-18-2012, 10:54 AM   #13
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Advance Auto Parts has this item in Walker Part # 35648, around $15.00. Fits gen 3 cars too with V8. Keith
This is actually for 1982-1997 f-bodies, but it might still work. I am just more inclined to use an actual replacement part for my specific application even though it's a few dollars more.
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Ultra Marine 2008 Hummer H2 SUV, 393 bhp (Tow Truck)
Black Obsidian 2009 G37S Coupe, 7-Speed Auto, Michelin PSS's, 330 bhp (Wife's Toy)
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Old 02-20-2012, 10:28 AM   #14
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how was the rattle like?? theres a "bzzz" sound whenever i come to a stop or randomly buzzes at idle too! it is SOO annoying and i cant seem to localize it...
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Old 02-20-2012, 11:51 AM   #15
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^ Check the fuel lines, mine were rattling ever so slightly to drive me insane a while back.. i ended up looking under the car and they were hitting the heat shield or something easy to bend by the drivers side, quick fix!

Nice job op!
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Old 02-21-2012, 05:52 AM   #16
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^ Check the fuel lines, mine were rattling ever so slightly to drive me insane a while back.. i ended up looking under the car and they were hitting the heat shield or something easy to bend by the drivers side, quick fix!

Nice job op!
that is a good idea!! i never thought of it honestly lol! will be checking while installing my new O2s
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Old 02-21-2012, 07:29 AM   #17
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how was the rattle like?? theres a "bzzz" sound whenever i come to a stop or randomly buzzes at idle too! it is SOO annoying and i cant seem to localize it...
My rattle was definitely a metal to metal sound and was obvious it was the exhaust ... the over the axle tube was right up against the heat shield. The sound would go away with rpm's and would rattle at idle.
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Old 02-21-2012, 07:31 AM   #18
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Quote:
Originally Posted by The Mighty Texan View Post
^ Check the fuel lines, mine were rattling ever so slightly to drive me insane a while back.. i ended up looking under the car and they were hitting the heat shield or something easy to bend by the drivers side, quick fix!

Nice job op!
... thanks.
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Ultra Marine 2008 Hummer H2 SUV, 393 bhp (Tow Truck)
Black Obsidian 2009 G37S Coupe, 7-Speed Auto, Michelin PSS's, 330 bhp (Wife's Toy)
Merlot Sunglo 2011 Harley Davidson Street Glide FLHX, 87 rwhp/103 rwt ... 107" build & more now underway
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Old 02-21-2012, 09:32 AM   #19
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The one on Summit is the whole thing. They are a sponsor too. Theyre exactly the same on my 89 and my 2000 so the 3rd gen one will fit fine.
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Old 06-10-2012, 04:10 PM   #20
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Sorry to bring up a dead thread. Anyone have a P/N for the arm that goes into this mount?
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Old 06-10-2012, 04:10 PM
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