Duramax Diesels Forum Truck of the Week
  #1  
Old 08-10-2018, 09:55 PM
citadel's Avatar
citadel citadel is offline
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Join Date: Jan 2008
Location: TN
Posts: 32
Default New sound on the truck

Hello all.

Came back from a four hour trip recently with no issues other than losing coolant. This is normal, dropping the truck off later to get the head gaskets done. Anyhow, the next day I fire her up and I've got this new noise. It will happen while in any gear (including park). I dont hear anything while idling. Once you apply throttle, there is a metallic rubbing sound. Just like if you were vigorously rubbing two metal plates together. It will increase with RPM until the exhaust drowns it out. Not seeing any codes, no loss in drivability or significant boost loss. Did a search but never saw anything that fit. Has anyone else experienced this kind of noise? Thanks in advance.

Chris
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2005 GMC Sierra 2500HD SLE CC LB
S&B Turbo Inlet Banks Intake
Banks Intercooler
Stock turbo with TCT BMW,
10 vane compressor, Billet vanes by Fingers
DHD 3" Y-Bridge
Nictane Adapter Airdog II DF-165
MBRP 4" Frontpipe back exhaust
MBRP Downpipe
Dmaxflow exhaust manifolds and up pipes
Trans rebuilt by me
Tuned by Idaho Rob
Kenwood DNX-5120
Buckstop bumpers front and back
Nicknamed "Audrey III"
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  #2  
Old 08-11-2018, 04:33 AM
NC-smokinlmm's Avatar
NC-smokinlmm NC-smokinlmm is offline
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Join Date: May 2011
Location: At Da Beach
Posts: 3,886
Default

Exhaust leak...

Egr deleted with plate?
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2010 GMC 1500 SCSB Denali Clone < lifted 22's/33's, Kooks, Magnaflow, 5.3, 6l80, TVS1900, lots of boost, Mayhem tuned, etc...

2015 Corvette Stingray Z 51 < Stock...

2016 LML CCSB Denali < Lifted 22's/35's, Fox 2.0 < I officially need help.
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  #3  
Old 08-11-2018, 04:38 AM
citadel's Avatar
citadel citadel is offline
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Join Date: Jan 2008
Location: TN
Posts: 32
Default

EGR has been removed with LB7 up pipes installed. I really hope you're right. Should be able to fix it with the head gasket replacement.
__________________
2005 GMC Sierra 2500HD SLE CC LB
S&B Turbo Inlet Banks Intake
Banks Intercooler
Stock turbo with TCT BMW,
10 vane compressor, Billet vanes by Fingers
DHD 3" Y-Bridge
Nictane Adapter Airdog II DF-165
MBRP 4" Frontpipe back exhaust
MBRP Downpipe
Dmaxflow exhaust manifolds and up pipes
Trans rebuilt by me
Tuned by Idaho Rob
Kenwood DNX-5120
Buckstop bumpers front and back
Nicknamed "Audrey III"
Reply With Quote
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