How do you open gas tank 2010 Buick lucern?

To open the gas tank on a 2010 Buick Lucerne, first ensure the vehicle is in the "On" position, but the engine does not need to be running. Look for the fuel door release lever located on the driver's side, near the floor next to the seat. Pull the lever, and the fuel door will pop open. If you need to access the fuel cap, simply turn it counterclockwise to remove it.