2001 chevy silverado it would not start replaced the coil and coil mod pick up started ran 4 2days acted like it ran out of gas. put gas in still didnt start changed pulgs,cap and rot,check fuel pressure it was low change fuel pump and battery. check pressure and its good. still wont run.

 

I guess you have the 6 cylinder, the v8s show (coil near plug) ignition. I saw what you replaced, but, did you look to see if there was spark?

With the engine cranking, is there an injector pulse?

I just wanted to add,If you think it is a fuel issue and you have that csfi system, they are noted for problems.

 

i have a similar situation - v8 sometimes i have to crank it over a couple of times to get it to fire up and then it acts like it is low on fuel pressure but the gauge reads plenty of pressure on the fuel rail- something is goofy????