2001 Kia Optima gas tank sensor

Engine Mechanical problem
2001 Kia Optima 6 cyl Front Wheel Drive Automatic

I have a 2001 kia optima and the gas gauge when filled shows 3/4 of a tank. When I get down to where the gas light turns on, there is usually quite a bit of gas in the tank. Once the light came on and no more than 5 minutes I was out of gas. Is there a sensor or something in the gas tank I can replace? So the gauge shows a full tank, and the light goes on when it gets to that low level of gas?