2019 Silverado RST 4wd crew cab. Orange check engine light came on almost as soon as I crossed the 7500 mile mark. It wasn’t on when I parked but when I got in to go back home it came on as soon as it started ODO read 7520, It was a 300 mile road trip home so I continued and made it back with one stop for gas and didn’t feel anything different. Made an appointment to get it checked out but when I got back in the truck today and started the light wasn’t on anymore. Should I get it checked, as I know the dealership will charge a diagnostic fee or was this one of those milestone maintenance engine lights just reminding you to get it checked?