This has been happening for weeks so I checked the fuel line to make sure it wasn’t rusted or anything and it was all good and next I changed the gas cap but the service engine light still comes on it seems like it comes on when I’m going highway speeds. And yes the gas cap is tighten.

 

need to be specific dude, find your code, search on here what others have done w that specific code and you might find the answer, EVAP has many codes and many things can be the culprit, there are 3 sensors you can change and a canister. so about 4 different parts for 4 or more different codes.