2000 GMC Sierra valley gasket

2000 GMC SIERRA
145,000 MILES • V8 • 2WD • AUTOMATIC
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JLANE
  • MEMBER
  • 1 POST
A repair shop is replacing the valve cover gaskets on my truck and think it is necessary to replace the "valley" gasket also. Is there such a thing and is it likely this gasket needs replacing?
Mar 24, 2010 at 11:52 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Yes there is one. It is under the intake. It could be leaking too. The only way to be sure is to clean everything, drive, and recheck it.
Apr 3, 2010 at 8:43 AM
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