1996 Chevy Blazer not getting fuel

Hello,

This could be due to a faulty fuel pressure regulator. As this got progressively worse, which could mean that the internals of the regulator slowly deteriorated and now it might not be working properly.
First check to see if you can hear the fuel pump come on when you turn the key to on position.
Check the fuel pressure using a fuel pressure test gauge. You can rent those gauges from your local auto parts store.
You should have 60-66 PSI of fuel pressure with the key on and engine off.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

I have attached diagrams for your reference.

Please let me know of any questions.
Thank you.