Where is the water pump in 1996 cadillac deville northstar?

The water pump on a 1996 Cadillac DeVille with the Northstar engine is located at the front of the engine, on the passenger side (right side when looking at the engine from the front of the vehicle). It's driven by the serpentine belt. It's a fairly straightforward location to access, but you'll likely need to remove the serpentine belt and possibly some other components to get to it properly for repair or replacement.