I have a 2001 corvette, my check engine light was always on , it’s most commonly a bad gas cap or an air intake leak, , gas cap was ruled out, had a friend check it out, found the EVAP hose had a leak , replaced it, cleared the code and it’s repaired, great price for a repair, insulation is a little tough , you have to fit the hose around the fire wall , no major tools required, be patient, 45 mins with never doing it before , advice follow the old hose , before you replace the new one , I’m really happy