Engine noise (audio) - 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 5.3L V8 Engine and Drivetrain > Engine Tunes/Mods

Engine Tunes/Mods Performance Engine Tuning/Engine Modifications

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  #1  
Old 06-02-2017, 07:59 PM
Backwoods16 Backwoods16 is offline
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2007 GMC Envoy Denali
Dark Gray Metallic 5.3L V8 4X4
Join Date: Jan 2010
Location: NJ
Posts: 55
Engine noise (audio)

07 Envoy 5.3, 222k miles. Rattling/clunking noise coming from engine. I pulled the belt and started the engine and the noise got worse, not a bad bearing. Intensity varies but it's loudest when first starting engine. Any ideas??
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  #2  
Old 06-02-2017, 08:01 PM
Backwoods16 Backwoods16 is offline
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2007 GMC Envoy Denali
Dark Gray Metallic 5.3L V8 4X4
Join Date: Jan 2010
Location: NJ
Posts: 55
Forget video

https://youtu.be/FCGF90wUyBc
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  #3  
Old 06-02-2017, 08:12 PM
Backwoods16 Backwoods16 is offline
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2007 GMC Envoy Denali
Dark Gray Metallic 5.3L V8 4X4
Join Date: Jan 2010
Location: NJ
Posts: 55
Video Error
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  #4  
Old 06-03-2017, 04:21 PM
Horsehaulin Horsehaulin is offline
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2006 GMC Envoy Denali XL
Bordeaux Red Metallic 5.3L V8 4X4
Join Date: Jan 2016
Location: Fort Wayne, IN
Posts: 24
Sounds like you have valve-train noise. Dose the engine oil with Seafoam for the next couple of oil changes and use something like Mobil or high mileage oil. Also change at the 35% mark, I know it's early but it'll help.
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  #5  
Old 06-03-2017, 04:34 PM
Horsehaulin Horsehaulin is offline
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2006 GMC Envoy Denali XL
Bordeaux Red Metallic 5.3L V8 4X4
Join Date: Jan 2016
Location: Fort Wayne, IN
Posts: 24
I use NAPA full synthetic in mine because NAPA oil is direct pour from Ashland oil which is Valvoline. They have great sales every other month and you can get synthetic for the cost of regular name brand oil.
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