2001 GMC Sierra Exhaust Leak

Tiny
FISHERMAN49
  • MEMBER
  • 2001 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
  • 60,000 MILES
It sounds as if there is an exhaust leak when I first start the engine but then the noise quietens as the engine heats up. I read online that there has been a problem with the exhaust manifold bolts and wondered if this was the cause of the noise.
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Saturday, February 28th, 2009 AT 10:50 PM

1 Reply

Tiny
MHPAUTOS
  • EXPERT
HI there,

Remove any heat shields from the exhaust manifolds, check foe black carbon stains, start up and use a length of hose as a stethoscope and listen around all bolts and flanges and gaskets, if there is a leak this will pick it up easily, start here.

Mark (mhpautos)
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Saturday, February 28th, 2009 AT 11:06 PM

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