Fuel Tank Sending Unit, 1982-1984 Chevrolet S10, GMC S15 Trucks, Fits 20-Gallon Tank, w/Fuel Injection, w/o Fuel Pump, 3/8 in. Main, 5/16 in. Return, 90 Ohms Full, 0 Ohms Empty|JEGS Fuel Tank Sending Unit for 1982-1984 Chevrolet S10, GMC S15 Trucks w/Fuel Injection, w/o Fuel Pump [20-Gallon Tank].