2000 Chevy Silverado truck starts then stops

Try feeding it with carb cleaner continuously does it continue to run if so test the oil pressure sending unit-

it does run with staring fluid or carb cleaner, i also was told to check the injector for a pulse and nothing there.

Could be that the computer is not receiving the ignition reference signal therefore its not energizing the injector/s or a problem with drivers in the computer or power to the injector/s-

thanks for the help your giving me, i just picked up a pcm from a bone yard and still the same, starts and stops???

Try this use direct power from the battery to the fuel pump connector gray wire-

is there any other place to catch that grey wire or do i have to tie in at the fuel tank.

You can power it thru the fuel pump terminal of the diagnostic connector if it has the terminal

ok i powered it though the main fuse panel theres a prim connector and added the 12 volt heard it humming and cranked the key a few time and still nothing, i do have a pressure gauge on the rails and its doing 58 psi.

Crank engine over while listening to the injector/s are they clicking meaning its pulsing

i put i test light to it and no flashing.

Did you check injector A and B fuses 15amps, also check the camshaft position sensor in the distributor this is the one that synchronizes the injectors-

fuses good, truck is 2000 and it doesnt have a distributor.