1993 Cadillac el dorado water pump location?

The water pump on a 1993 Cadillac Eldorado is located on the front of the engine, driven by the serpentine belt. It's generally towards the bottom of the engine, but you'll need to consult a repair manual or a diagram specific to the 4.9L V8 engine (the most common engine for that year) to get the precise location. Accessing it will likely require removing the serpentine belt and possibly some other components.