Problems, Driver Warnings or DTCs - Gen 2 Volt
Hello,
I have a 2018 Chevy Volt with very low miles. The check engine light came on and I took it to get checked and it gave a code of P04221 EVAP small leak detected. The guy at AutoZone said it could be a loose gas cap. I tightened and it didn't go away. I took it to Chevy and they said that...