Seeing as you just changed the pump, can you hear the pump cycle when you first turn the key on? if not check all your plug in wire connections one my not have been in properly and came loose, hope this helps
SOURCE: 99 Chevy Blazer
Have you tested the crank sensor? sounds like no command from PCM to pulse injectors.
SOURCE: HELP! HELP! SOMEONE PLEASE ! 2001 chevy blazer fuel problems
I would check to be on the safe side the fuel filter is going in the right direction. The arrow is pointing towards the engine away from the fuel tank, Then you need to make sure the fuel pump wiring connections are good contact and did not come loose when driving.
SOURCE: where is my fuel pump relay on a 1996 chevy
Its in the fuse panel under the hood the cover will tell you where it's located.You also may need to replace the crankshaft speed senser,if it's gone the relay won't work.If you listen and hear no fuel pump running when the key is first turn on then it may be a relay issue or the wireing to the fuel pump.
SOURCE: I have changed the fuel pump on my 1997 chevy
You may have a problem with the wireing harnest to the fuel pump There is a service boletin #25215705 released in march 07 The wiring is not resistance wire and tends to over heat When i did mind i bought a deiphi fuel pump and this kit came with the pump i had to cut the wiring back about a foot when i looked at the old wires they looked like they had over heated and were corroided You probably arn;t thrilled to hear this because i know how much fun it is dropping that tank but if you got it down a few inches i think you cuuld get your hand up there and unplug that connector to check it i hope this helps
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