99 silverrado chngd fuel pump n still no start no noise from pump

My last silverado was a 99 and i changed out my fuel pump and the fuel pump wiring harness also. That seemed to make mine run smoother

Did you notice if you where low on gas either or both times this happened? I wonder if it's not a fuel pressure problem? Other wise might give it a tune up air filter, plugs, fuel filter. I've also noticed that chevy's are always happier with a fresh oil change.

the problem you are discribing would lead me to belive your fuel filter is clogged which is a simple fix 3 dollar part at any part store or on the worse hand your fuel pump itself could be weak you can open the gas tank cover and have another person turn the truck key to the on position without going far enough to start you will hear a faint whining noise if it is going bad or a louder noise if it is fine Good Luck

it sounds like the fuel pump or fuel filter

when you turn the key on you should hear a humming or whinning noise coming from the fuel tank if not,then its your fuel pump which is a very common problem

check then crank positon sensor, it control the fuel system. it tell the engine computer when to send fuel

The fuel pump as a gage sender that monitors the gage in the dash. I would replace the fuel pump .
Very common problem

Good Luck

THE FUEL PUMP IS BAD.

if your losing fuel pressure after the pump runs the drain back valve in the pump has failed.

and i doubt that you are seeing enough fuel pressure to run a vortec engine.

low fuel pressure equals a non running vortec

Check fuel pump relay.. If need you can supply fuel pump manually with power and se if it operated you should hear it and vehicle should start. Contact if you need more help and thanks for using FIX YA

can you hear the fuel pump buzz when you first hit the key /make sure it's getting fuel also try checking the timing belts //might of slipped..