Question about 2004 Chevrolet Impala

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High evap I place a fatory gas cap on it to fix it but the enigine light will still not stay off.

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  • TripleTauto
    TripleTauto May 11, 2010

    what is your code?

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Have you replaced evap vent solenoid yet they are known to be bad located near gas tank.

Posted on Jan 03, 2009

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Gas cap indicaytor light came on. Changed cap and made sure it was tight but indicator light still comes on


The gas cap light is a generic light that indicates an emission problem. Usually a vacuum/pressure leak within the system. The gas cap is usually the first thing to check, however may not be the problem. There are numerous sensors and lines that control the vacuum/pressure/ of the fuel vapors and one of these is loose/disconnected/defective causing this light to come on. I would recommend inspecting hoses under the hood for any that may be loose/disconnected. You may also require a scan test to view sensor data to isolate the source of the light

Dec 29, 2015 | 2008 Chrysler Sebring

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My check gas cap light is on is this an electrical problem or do I need a new gas cap


Try to change the gas cap first if that doesnt work check ur fuses then if still not fixed its definitely electrical

May 28, 2014 | 2003 Ford Focus

1 Answer

Engine light stays on, but our gas gap no longer locks


Raymond, that is the reason engine light stays on. Get a replacement fuel cap.

Apr 06, 2014 | 2004 Cadillac SRX

1 Answer

Engine light staying on


The engine light comes on from some kind of problem with the engine. It could be a sensor of any kind. The best thing to do is go to a place like AutoZone and have them scan it and find out what is going on. One thing you could check is the gas cap, if she put gas in it and didn't get the cap on tight it could set a code and turn on the light. If you get the cap on right the light should eventually go out. Please rate my answer so I get the points for answering your question.

Jan 11, 2012 | Cars & Trucks

1 Answer

I have an 2004 Infiniti FX35,the service engine light came on, I read the owners manual and it said it might just need the gas cap replaced, so I bought one from the dealer, the light stayed on, I had a...


You need to have the code pulled, then cleared. That should have been done with your diagnostic tests. Many parts places like AutoZone will do this for you for free. It could be something as simple as a gas cap but it could also be more serious like a catalytic converter.
If there is a fuel vapor leak, it will record the same code as a faulty gas cap. That would mean that you need a new filler hose which is where you put the nozzle in to fill up your car with gas. This is a more expensive fix than a gas cap. I am guessing that the code which was pulled suggested a gas cap OR something more serious.
You may have more than one code being recorded. Your best bet would be to disconnect your battery for 20 minutes or so, then drive the car until the check engine light comes on again then take it to have the codes pulled. Those codes sometimes stack up and maybe it wasn't reset after you replaced the cap.

Aug 30, 2011 | Infiniti FX35 Cars & Trucks

1 Answer

What is the normal reason the check enigine light comes on?


THERE is so many things that can cause light to come on. have you checked the gas cap to make sure it is tight? have someone scan it and pull the code and i can help you from there

Dec 03, 2010 | 2006 Chevrolet Impala

1 Answer

Service engine soon light stays on. The gas cap is very hard to take off and put on


The SES light will come on with a missing or defective gas cap. Try getting a new gas cap and installing to fix the problem.

Otherwise, have the SES light scanned to see what other problem may exist.

Hope this helps.

Jun 22, 2010 | 2000 Pontiac Grand Am GT

1 Answer

The enigine warning lamp is on, and dont know what to do


what year is the vehicle and is it the check engine light? possible causes are loose gas cap failed o2 sensor or plugged cat. with further info I can lead you in the direction you need,

Dec 31, 2008 | Mitsubishi Mirage Cars & Trucks

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