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Old 05-27-2012, 10:35 AM   #1
belbers1
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Join Date: Feb 2010
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Exclamation 2001 Yukon P0440 Evap

Hey guys,
My check engine light keeps coming on and when I check it with my scan tool it is P0440 evap emission system. I replaced the gas cap and as far as I can tell don't have any leaks. Any suggestions? I don't have a smoke tester but would like to check myself so I don't have to pay to have it done. Thanks in advance.
-Brandon
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