Tried everything
 

hello I have a 2002 hello I have a 2002 2 wheel drive Chevy Blazer I have replaced everything that I can think of, I have replace the BCM, I have replaced the ebcm, spark plugs, wires, battery, ignition switch, new key, alternator, fuel injector, although I just replace the fuel injector with a used Spyder one like it had before not an updated one. the only part that I have not switched out are the starter, the mass air intake, or the fuel pump. I have changed the fuel filter. I have done all this and my Truck wants to turn over but just can't I really don't know what it is can somebody please give me a suggestion

Its the fuel pump, dont get a cheap one or it will die again soon. Also a 30.00 fuel pressure test kit would have saved you a lot of money on parts.

I will do
 

Thanks for the suggestion, I will do that I really do appreciate your feedback.