His morning I got a gas cap warning on the dash. Checked gas cap and it is fine. Warning will not go away?

 

This is for stock jk folder. Maybe they can help there

 

If it was the gas cap, it will take a few trips for it to go away unless you clear the code with a code reader.

There are a few things in addition to the gas cap that will bring on the gas cap warning.
It's telling you there is a leak somewhere in the Evaporative Emissions System.
If it detects a leak, and it happens to be soon after you filled the gas tank, it will assume you have not properly installed the gas cap, and will give you that warning.

 

Should I be looking for a leak or wait a day or two? If there is a leak will I notice a difference in performance?

 

Running with an EVAP leak won't hurt anything that I know of.

Go to an auto parts store that will check codes for free. See if there are any other codes.
If they won't clear the code, ask them to hand you the reader so you can clear it.
Drive for a while and see if it comes back.

 

Will be doing that tomorrow. Thank you!

 

Mine was an evap line leak. Bad gas caps arent uncommon either.

 

I have got the same before push the right button on your dash should turn off. I have got this as well as a evap leak code now I did change my gas cap.

 

What are you referring to?

 

The trip computer button by the speedo/tach.