2002 Astrovan no start?

Steven, one thing comes to mind with the astro van.

There was a recall way back for the ignition coil wire, ( the wire from the coil to the distributor)

it was rubbing either against the engine cover or the transmission fill tube and grounding out.) REROUTE IT.

Check this wire to see if you're getting spark (when it doesn't start),

remove the end that goes to the distributor, hold it about 1/4 inch away from the engine block and crank the engine (is there spark?)

If yes, you need to hook up a fuel pressure gauge and see how much it's putting out, you need 60PSI anything below 50 is no good.

Yes I know you said you replaced the fuel pump 2 years ago, but if you replaced it with an after market pump , it might be your problem because they are CRAP.

If you need a pump, get a GM pump, it's a little more money but if I remember correctly they have a lifetime warranty.

Good Luck

I am assuming you have a 4.3.then I would look at my distributor cap and rotor.also make sure you replaced your fuel filter