Question about Chevrolet Equinox

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Recently i discover that my check engine light came on while driving ,so i check the gas cap and notice that the cap was not thightly close ,i closed the tighter but the light still stayed on,what could be the problem?

Posted by tobeornot557 on

  • yoli_1991 Jul 21, 2008

    gas cap was loose,got new one,then engine light came on.been on a week. tried fill up tank with better gas,still light on.



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If the problem was the gas cap It will take a while before the light goes out on it's own. The computer only runs it's test when conditions are right. And it has to pass at least twice before it request the light to turn off. If the light does not go out in a week or two you have another concern.

Posted on Jul 19, 2008


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My check engine light is on, and I noticed that my gas cap was off. would the gas cap being off throw that code up?

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I would recommend having the computer scanned for trouble codes next.
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Unfortunatly that could be a myraid of problems. Try checking the gas cap for thightness. Also go to a auto parts store and them them check your car on their Sensor.

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Because your vehicle is a 2008 I feel it shouldn't be anything to pressing but still take some precautions.

What alot of people don't know is sometimes if the gas cap is not put on tight enough a little air might get in or your gas pump might have to work a little harder because it can't get full vacuum pressure with the cap slightly open. these are not major issues.

these are reasons why your check engine light comes on. It happened to my 2005 Buick Rendezvou We had the check engine light on for a week. The car never shuttered, stalled, delayed starts it ran perfectly fine. I took it in to check engine light their computer showed that it was the EVAP system which is the heating and cooling system I would have to get it checked for leaks or do a static check for leaks.

This didn't look good but then one day I had done some work for a friend told him of my problem he told me it could be my gas cap. The next day I asked my wife if the gas cap was working on vehicle it actually was broke I replaced gas cap and the check engine light came off.

Now with this story (which is true) don't assume every problem could be this. But if you are not noticing any stalls, delayed starts, shuttering anything out of the ordinary check the cap at times to make sure it is closed.

If you keep on having light on and replaced cap or made sure was securely on then take and get it checked out.

merry christmas

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