Question about 2005 Chevrolet Colorado

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Check engine light/gas cap will not stay tight.

Check engine light came on, still runs perfect, but gas cap will not stay tight. Would the gas cap not staying tight make the check engine light come on. Will this hurt our truck?
Thank you for your help.

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  • 3 more comments 
  • Anonymous Mar 12, 2014

    The friction latch between cap and reservoir does not engage before thread bottoms out.

  • Anonymous Mar 29, 2014

    My check engine light is on I have a kia sorento2008 it drives ok fluid for the cooling is filled need oil change checked the gas cap tighten it up and it still stays on what could be the problem

  • Anonymous Mar 29, 2014

    My check engine light is on I have a kia sorento2008 it drives ok fluid for the cooling is filled need oil change checked the gas cap tighten it up and it still stays on what could be the problem

  • Anonymous Mar 29, 2014

    I have replaced the gas cap on my chevy uplander twice. Works great for awhile, then starts to lose the seal. Check engine light comes on. What can I do to stop this from happening.

  • Anonymous Mar 31, 2014

    check engine light is on for emissions, gas cap light comes on occasionally, have put 3 different gas caps on but after about 40 miles light comes back on. 2 were bought at auto parts stores and the last at the dealership.

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Yes the gas cap could cause this,also check evap. purge solenoid and hoses for cracks or kinks,the solenoid is on the inner fender and has 2 hoses, one to the intake and one to the canister, the most common cause of this code is a defective purge solenoid.

Posted on Apr 24, 2009

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Yes, the gas cap will cause the Check Engine Light to come on. Will set code P0441 if I remember correctly. It should be okay to drive it. If you would like to confirm the code, take the truck to an auto parts store like Autozone and have them hook up their scan tool and read the code. If its P0441 it will probably be something like EVAP or Evaporative system leak.

Its an easy enough fix while your there too, just pick up a new gas cap or you could pick up an OEM one from the dealership.

Posted on Dec 31, 2008

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I had a problem come up with a 1997 Cavalier that I attempted to top off with gas, I had the check engine light come on. I never again allowed myself to top off the gas level after that one time. I never had the check engine light come on again. Remember that gas expands to a degree especially in warm weather. The most that you should do is round out the amount to an even number only a few cents. Good luck

Posted on Jun 01, 2014

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