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P0174 Lean Bank 2 Code (forever...........)

This is a discussion on P0174 Lean Bank 2 Code (forever...........) within the General Help forums, part of the LSx Technical Help Section category; Small exhaust leaks usually "tick" and sound a lot like valvetrain noise. Easiest thing to do is look it over ...

  1. #21
    Super Moderator
    pajeff02's Avatar
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    Black & Blue
    '02 WS.6 / '07 Suburban

    Small exhaust leaks usually "tick" and sound a lot like valvetrain noise. Easiest thing to do is look it over good from all angles -- a crack will usually leave carbon tracks around it, or on adjacent parts.

  2. #22
    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
    2004 GTO M6

    Any updates?

  3. #23
    Experienced Old Fart jfl330's Avatar
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    '02 35th SS LE SLP#1084

    Quote Originally Posted by cammed goat View Post
    Any updates?
    Going to go under and look at the exhaust manifold today. Have my doubts that this is the cause. Sometimes it runs perfect, sometimes not. I think if the manifold was cracked it would be consistently bad.

    Jon

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