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L5p Fuel Tank hissing/air leak sound

DmaxBranman
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DmaxBranman New Member

DmaxBranman

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Posted

Hey all first post here . I have a L5P duramax . It’s a year old. It’s super hot here last 2 weeks but I have noticed a loud hissing sound coming from near the fuel tank twice . Once during a “cold start” and once after some driving . I was wondering if this is something that’s normal.

 

I used my Banks monitor and scanned the system for codes , nothing.

 

Thanks !

 

 

Sent from my iPhone using Tapatalk

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