greetings, i have a 99 astro van 2 wheel drive, 4.3 vortec
yesterday it ran fine. today i get in and shes bogging down like its missfireing, it stalled about 200 feet from home. i got it started again and took it home. it was jerking, trying to die. i first checked the fuel filter...it was good. now it wont start at all. could it be the fuel pump? i can hear it turn on but it sounds loud.

 

Could be. Could also be the ignition system. Distributor is a common point of failure. More testing needed.

 

check fuel pressure

 

Is the check engine light on? If it is read the codes and that could tell you what the problem is.