2008 GMC Envoy Engine noise

  • 2008 GMC ENVOY

Engine Mechanical problem
2008 GMC Envoy 6 cyl Four Wheel Drive Automatic 65000 miles

My enging is making a high pitch whining sound and I just replaced it with new spark plugs what could be the problem.

Do you
have the same problem?
Thursday, October 7th, 2010 AT 10:45 AM

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