1999 Chevy Tahoe wont start with the gas cap on

1999 CHEVROLET TAHOE
12,000 MILES • V8 • 2WD • AUTOMATIC
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MHALL01
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sounds crazy I know. we was going on a trip and i didnt know the neighbor hood so i put on a locked gas cap. we got where we was gong in about 2 hours. went to get i it go somewhere all she would dois start and die. we took off the new gas cap and she started right up? now she still wont startback up even with the regular gas cap. with out one she runs good. but it is not good for no gas cap right! what could be the cause? we changed the fuel filter still the same?
Apr 5, 2009 at 5:41 PM
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RHALL77
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to be honest, i never heard of this. I think at this point i would take it to the local dealership and see what they say. let me know what you find out. i would really like to know
Apr 6, 2009 at 2:40 PM