Engine will not start

That is not much to go on. Given the history of how GM fuel pumps usually fail, start by listening for the hum of the pump for one second when you turn on the ignition switch. If you do not hear that, check the pressure in the fuel rail under the hood. If it is low or 0 psi, suspect the fuel pump.

Also read the diagnostic fault codes. Here is how to do it:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method