Is there a fuse for the fuel gauge on a 1993 Chevy g20 van?

Yes, a 1993 Chevy G20 van does have a fuse that can affect the fuel gauge operation. The fuel gauge is typically part of the instrument cluster, and if the gauge is not working, checking the fuse related to the instrument panel is a good first step. Consult the owner's manual for the specific fuse location and rating. If the fuse is intact, the issue may lie elsewhere in the electrical system or the fuel sending unit.