Confused about how to open the fuel door to access the gas cap on the Chevy Sonic? You’re not the only one. Just follow this tutorial.
- Exit the vehicle. Note: There is no lever inside the vehicle to release the fuel door open.
- Locate the circular gas cap door on the rear passenger side of the Sonic above the rear wheel.
- Push in firmly on the left side of the fuel door, and it should spring open and reveal the gas cap.