2004 GMC Yukon check engine light

  • 2004 GMC YUKON

Engine Mechanical problem
2004 GMC Yukon V8 Four Wheel Drive Automatic 93000 miles

My check engine light is on telling me to lock the gas cap, locked it, but light still on. I replaced the cap and light still on. Any ideas

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Monday, October 26th, 2009 AT 4:33 PM

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