Just put a fuel pump on and it ran for about a month not i cant get it to start

could be a clogged fuel filter or fuel line.preventing enough fuel reaching the pump or engine. or you could have burned out your fuel pump (they cant take running dry for very long)

The first thing i would check is the fuel pressure. the fuel pump may be running, but that doesn't mean that it is putting out the right amount of fuel

A possible fuel pump pressure issue. You will need to have a garage check the fuel line pressure. The engine requires more fuel on cold start and a failing pump may not be able to cope with supply. This may also be apparent at high revs, but not as apparent as cold start.

fuel pick-up in tank is blocked it has a sock over the end as a gross filter to keep out any big junk from getting sucked into the pump and causing damage to it. the sock can get so plugged up that no fuel will flow, causing the pump to run for a short time then with no fuel flow to cool it it trips the safety and shuts off

Does the pump have voltage and ground ?
Did you check the fuel pump relay and fuse ?

If you hit the tank and it ran? The fuel pump is bad. By striking the tank you jarred the pump, causing what mechanics call "The last ride" Peice of sound advise, Replace with ac delco pump. The zone pumps go out usaly within months if not days

Check ground wires, add a couple extra, can't hurt is cheap and in most cases fixes the type of issues you described

I would check the fuel lines themselves and make sure there is no blockage. If not you might want to check your fuel injectors and see if they need to be replaced. also make sure you didnt install fuel filter backwards.

This injector set-up needs a specific fuel pressure supplied to the fuel rail to even start, much less run properly. The fuel pump is immersed in fuel inside the gas tank to keep it cool and not burn up. Running the fuel level low causes more heat in the pump and interuptions in proper fuel pressure. AC/Delco pumps have proven to be a reliable fix, the aftermarket pumps only last for a month or two sometimes. Check fuel pressure under the hood and power and ground to fuel pump at electrical harness at top of gas tank. This truck needs a fuel pump.

fuel pump died replaced it truck ran poorly afterwards. Had a prussuer test done pump determend pump was no good. Put in another ran good for 2 days started running poorly hard to start no power. 2nd fuel pump. So i figure another bad new fuel pump wow changed it put in a third brand new fuel pump. Still will not eve start now. I had it tuned up 2 months ago new plugs rotor, cap, etc. put in a new fuel filter made sure it is on proper checked all connections for leaks. this cannot be a fuel pump problem now. no problem with the elctrical i figure i have great spark on ignition tester. I can hear the fuel pump prime when i turn the key. but when i went and checked the fuel port i had no pressure. When it is being cranked gas sews out of the test port. Also i dont if this is comon cause i used to turn my keyand go. but when i have someone turn the key and i listen at the gas tank whn the key is shut off i hear gs spraying back into the gas tank. So i am open for opinions.