• Tiny
  • Cathy Davis
  • 2004 GMC Envoy

Engine Mechanical problem
2004 GMC Envoy 6 cyl Two Wheel Drive Automatic 78000 miles

I have a 2004 GMC Envoy XUV. I have noticed that sometimes while sitting at the light with the AC running or not running, I will loose power and the car shut off. I have changed my fuel filter and starting using 89% octane gasoline to see that that will help but it didn't. What do you think the problem may be?

Tuesday, August 24th, 2010 AT 9:47 PM

1 Answer

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,410 posts

Has the check engine light come on? Have you checked fuel pump pressure? Have you checcked for vacuum leaks?

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Wednesday, September 8th, 2010 AT 9:28 AM

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