2004 Gmc Yukon Tighten Gas Cap Flashes On Display Replaced Engine Light Came

2004 GMC YUKON
150,000 MILES
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tighten gas cap flashes on display replaced cap engine light came on its very hard to fill tank with gas code says gas recurulation flow insufficient HELP dont know what to do my researh leads me to believe it to be a vacum leak or acuator gone bad but know
Nov 30, 2012 at 5:55 AM
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HMAC300
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hve your evap system smoke tested for leaks.
Nov 30, 2012 at 3:02 PM
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