1993 Cadillac Deville

Drain the cooling system, remove the belt, and water pump pulley. Remove the 6 or 8 bolts that hold the pump to the inlet housing, remove the 6(or so) nuts that hold the pump to the cover, , the two t-40 torx bolts at front, the two 15mm bolts at rear, and the one remaining 15mm bolt, and then the pump. Clean the gasket surface, and reassemble in reverse of removal. It can aid some to remove the front engine and trans mount bolts and lift the front of the engine, as well as loosen the clamp on the A/C accumulator and lift it out of the way. Maybe even remove the battery for more access.