2001 Chevrolet Silverado 2500 HD Q&A
2001 Chevrolet Silverado 2500 HD Question: Does the fuel pump assembly have 1 or 2 wires?
Within the harness to the pump module (assembly) there is on some models 6 wires 2 for the pump, 2 for the gauge unit and 2 for the pressure sensor! On some models there are 4 wires 2 for the pump and 2 for the gauge unit! Your truck could be either way. Can you hear the pump run when key is turned on? Have a helper listen at filler neck with cap removed and turn the key on. Now with key still on bump the starter just a second and let of but leave key on, does the pump run for about 3 seconds? Do this as many times as needed. Pumps give a bunch of trouble! Post results more info. available. - pushrod