It goes where you put the gasoline, in the filler neck.
The gas cap light will go out automatically after you tighten, or replace the gas cap.
loose gas cap
Because your gas cap is loose. Tighten it and the light will go off.
Any vapor leak from the fuel system can cause a "gas cap" light.
Buy a new gas cap replace cap then reset the computer by pullin the computer fuse or dicconecting the battery for a moment.
go to the gas station. open your gas cap the put the nozzel in the fuel neck put how much you want in and then go pay for it go to the gas station. open your gas cap the put the nozzel in the fuel neck put how much you want in and then go pay for it get in your car go to the close petrol sation get some petrol pay for it and go home and
Tighten the cap until you hear it click 3 times. If the light does not go off after awhile replace the gas cap with a new one.
Sometimes it can take a day or two, but if you're sure a loose gas cap is why it went on, don't worry about it - it will go out.
If it is a after market fuel cap then the cord will not work on it. If you would like to have the little cord then you have to go the Chevrolet dealer and get a new cap form them. The new cap will have the little cord with it.
Go to stant.com and look for part number 10817. It is a threaded Chrysler Gas Cap. 95-99
Until the problem causing the check engine light to go on is fixed. It might not be the gas cap, or the one you replaced it with could be wrong.
If the gas cap was indeed the culprit, the light will go out after a few driving cycles. If it does not go out, then there is something else wrong.