Fuel Pump, car won't start, has good battery and spark, no fuel.

Make sure battery has a full charge. Have a helper crank it while you check for spark at the plugs. If spark everywhere, use a gage and check proper fuel pressure and fuel injector pulse. How long since a tune-up? Any applicable trouble codes?
Chevy doesn't have a fuel cut-off switch. As far as ford--chevy--Chrysler, ford is the only one I know of that has a fuel cut-off switch.

What's missing ? Spark or fuel ? Just because you replaced the fuel pump and filter does not mean it's getting fuel . Did you check fuel pressure , the electrical circuit ? Did you hook up a spark tester to see if there is spark ? Watch this video from Eric the car guy . No Start Diagnostic Basics EricTheCarGuy Do you know what a fuel pump relay is ? Fuel Pump Electrical Circuits Description and Operation

There are some logical steps need to be taken 1st. Verify if the engine has air, fuel and spark. Fuel can be checked with an inline gauge at the fuel rail. There could be several different things wrong. Bad ECM, fuel pump, injectors, fuel pressure regulator etc. Need to verify spark, this too may have several different problems. Bad ECM again, power/ground circuit faults, coil pack ect.

spark plugs are deep in the head yet you should get all the the old fuel out first, stale fuel wont ignite and will also clogg fuel filter. you need a mix of atleast 70% new fuel even then its not good for the injecters. If its a manual gearbox a tow start is a quick fix although no go for auto's. cant be much wrong if car was fine when parked, plugs-fuel-filter and possibly fuel pump for sure. If that doesnt fix take plug out put in lead and crank engine to be sure you have spark even just put any plug you know works in lead leaving your plugs in engine just to check for spark y turning over engine looking for spark on plug good spark will be blue but any spark is good.

could be fuel elated, there are two fuel pumps, the high pressure pump to feed the injector system and the lift pump to get fuel from tank to the high pressure pump. Check fuel filter also and start there. The fuel pumps are expensive. What have you checked so far and eliminated?

check the pcm ignition fuse and the fuel pump injectors fuse.if all is good.your pcm could be the problem. the pcm it controls fuel pump.first have car hooked up to scanner to look for pcm failure code.

The fuel filter is in the hood (metalic black) and the fuel pump is in the fuel tank (either through the back seat or bringing the tank down.

Cheers

if car wont start.make sure your battery volts are 12.5.if not charge battery.or replace it if dont hold a charge.if battery is good engine wont turn over.make sure battery cables is clean and tight if all good no start .have starter and starter solenoid check.if battery and starter is good.check for fuel .has some one turn ignition to the on position.go to rear of car listen for fuel pump noise.if your hear fuel pump check ignition system for spark.go to auto parts place buy a spark tester.if you get no spark .check .ignition fuses and ignition module.if you hear no fuel pump.replace relay or fuse.if if fuse and relay good replace fuel pump.if every thing good .your car could have crank sensor problem. or your car is in theft deterrant mode.if so have your car towed in and scanned.

change the fuel filter or check the pressure regulator b trying to start car then pull the rubber fuel line from regulator if anything drips out in the least change it...cheap and easy

Sounds like fuel pump going out. I was told by a friend that the pump can get stuck and that by knocking on the fuel tank or by attempting to start that it can kick the pump out of the bad spot and it will start. But it is a sign that it needs to be replaced.