exhaust manifold leak? - Page 4 - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > Exhaust Mods

Exhaust Mods Performance Exhaust Modifications

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  #31  
Old 11-02-2015, 11:30 PM
gbernich gbernich is offline
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2003 Trailblazer LT EXT Chevy TrailBlazer LT
Imperial Blue Metallic 4.2L I6 4X4
Join Date: Oct 2013
Location: New York
Posts: 8
You're right and i apologize for this. I had a hell of a time even getting the heat shield off (with limited tools) due to rust. I brought it to another shop that I trusted and it turned out to be a blown out donut gasket where the manifold attaches to the downpipe. It cost me 90 bucks to have him fix it. It was nice to hear the car sound like new again. I almost couldn't believe it was running, it was so quiet!
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  #32  
Old 11-10-2015, 11:31 AM
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cpolasky cpolasky is offline
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2002 GMC Envoy SLT XL
Black 4.2L I6 4X4
Join Date: Dec 2014
Location: Harbor Springs, MI
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Hmmm... I have coworkers that also have gmt-360's. Mine sounds great and I have boo-koo power, but it's slightly louder than the others in the parking lot. I'll inspect my manifold soon.... I work a lot so soon might be a couple weeks. It's not annoying or getting louder... kinda sounds tough actually, but if something isn't right and could cause other issues I try to fix it asap.
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  #33  
Old 10-16-2017, 10:33 PM
bhearts77 bhearts77 is offline
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2005 GMC TrailBlazer LS
Black Granite Metallic 4.2L I6 4X4
Join Date: Sep 2017
Location: US
Posts: 8
Can someone answer this question for me, will the 09 dorman replacement manifold work on an 05 head. I like the design better and wanted that one in specific. Any help is appreciated.

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