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ther isd a fuel pump fuseand fuel pump relay. also and I am not sure where it is located, but all vehicles with electric fuel pumps have a switch that is suposed to cut off the fuel pump if the vehicle get into an accident. this switch on many cars is located on the pasanger side inside car in the kick panel or around the heater box. not sure of location on the astro van. these switches sometimes pop off for no reason or hitting some rough roads etc. Gm also has several service bulitens out for defective harnesses and the problem might be the connector to the fuel pump. some ideas. good luck
Hi, typically, this would resemble a faulty sending unit, when the computer sets a code for this sensor, it will set your guage to empty as a result. A new sensor may correct this condition.Good luck...Coop
on the engine compartment on the fuel rail there is a pressure port that is usually covered by colored plastic cover open it then turn the ignition switch listen for the sound of your fuel pump turning on momentarilly. if you cannot hear it while ignition is on insert small screw driver on the port to open the valve make sure you wrap rugs to control the flow of fuel if there is any. the fuel should around 40-50 psi so expect heavy fuel coming out at port if your pump is working. to change it you have to drop your fuel tank and replace your pump. this is usually left for professional due to fire hazard. any spark due to static electricity can set your fuel to flame up.