The oil pressure switch on a 1996 Chevy S10 with a 4.3L Vortex engine is typically located on the driver's side of the engine block, near the oil filter. It's a relatively small switch, often with one or two wires connected to it. You might need a wrench (likely a 5/16" or 7/16" depending on the specific vehicle) to remove it.
However, be aware that the exact location can vary slightly depending on the specific year and configuration of your truck. A visual inspection near the oil filter is your best bet for pinpointing its location. A repair manual specific to your year and model S10 will provide the most accurate information and diagrams.
