Q: How to remove and install the water pump on Cadillac ElDorado and Fleetwood?
A: For 4.5L and 4.9L engines,Disconnect the negative battery cable and drain coolant. Remove the air filter assembly, coolant recovery tank, cross brace, water pump pulley, and the pump. Clean gasket surfaces and fit a new gasket on the pump. Install the pump, following by the pulley. Reinstall other components in reverse order. Refill with coolant and check for leaks.For 4.6L engines: Disconnect battery and drain coolant. Remove air cleaner assembly, water pump drive belt, hoses from thermostat housing, and water pump bypass hose. Remove water pump cover, then the pump using a special tool. Clean surfaces, install new O-rings, and the new pump. Replace the cover with a new O-ring and reinstall components in reverse order. Refill with coolant.