To find the relevant component, you'll need to consult your 1993 Park Avenue's owner's manual. This manual will show you the fuse box diagrams and may also list the relay and fuse numbers related to the fuel pump. Look for terms like "fuel pump relay" or possibly "engine control module" (ECM) related fuses.
If you don't have the owner's manual, a free online version might be available through a Buick parts website or a general automotive repair site. Search for "1993 Buick Park Avenue owner's manual PDF."
Important Note: Working with the car's electrical system can be dangerous. If you are not comfortable working on car electrical systems, it's best to take your vehicle to a qualified mechanic. Incorrectly diagnosing or replacing fuses or relays can cause further damage.