Fuses are under the dash left driver side and under the hood in the power junction box as-well as the relays and there may be one or some at the computer right side under dash.
Where actually is the fuse for the fuel pump?
I would start a new question thread to ask this giving all info on your model as I do not know right off, without doing some searching first but it should be listed on the fuse panel covers underside/back side. Of course the repair manual will say too.
Looking for a Used Silhouette in your area?
CarGurus has 2 nationwide Silhouette listings and the tools to find you a great deal.
Search Oldsmobile Silhouette Questions
Oldsmobile Silhouette Experts