PONTIAC GRAND PRIX LOW FUEL LIGHT

I Have A Grand Prix Gtp And Sometimes When The Low Fuel Light Comes On And It Makes That Ding Noise My Radio Shuts Off And Come Back On

I Have A 2000 Grand Prix Gtp. It Around 81,000 Miles On It, 3.8 V6 Supercharged. Sometimes When I Slow Down To Turn Or Let Off The Gas...