07-04-2009, 10:05 AM
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#8
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Drives: Blk/Blk 2018 Sierra SLT
Join Date: Dec 2006
Location: Golden State
Posts: 2,925
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Quote:
Originally Posted by SicSix6
Sounds like an exhaust leak at the exhaust manifold. Try to tighten the header bolts.... should be 10mm.
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