2004 Chevy Impala Evap P0440 code

2004 CHEVROLET IMPALA
45,000 MILES • 6 CYL • FWD • AUTOMATIC
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ROB422
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replaced fuel cap, code came back. what could be the problem
May 27, 2008 at 5:31 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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