2007 Chevy Impala obd code

2007 CHEVROLET IMPALA
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DERF13MD
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Engine Mechanical problem
2007 Chevy Impala 6 cyl Two Wheel Drive Automatic

I have a code 449, and think its my gas cap, what else could it be?
Jan 12, 2010 at 8:16 AM
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BLUELIGHTNIN6
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
may also be faulty EVAP canister vent solenoid valve
Jan 13, 2010 at 12:04 AM
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