Question about 2005 Chevrolet Colorado
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.
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
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
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
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Posted on Jan 02, 2017
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