Its pretty easy. Just loosen the serpentine belt. Take the lower hose off the radiator to drain the block. Take out all the bolts holding the pump on.There are three different types of bolts used used so remember where they go. Clean all the surfaces on the block , I use a Razor blade then some carb cleaner to remove any oil. Use a little silicone gasket sealer on the new gasket . Install in reverse of above, your done.
how do I remove a water pump on a 1990 4.5 liter cadillac engine
see answer given on how to change water pump on 92 deville. Same car.
How to replace the belt
how do you replace the water pump on Cadillac cts 2004 3.6
How do you replace the water pump on a 1988 Cadillac Seville?
behind the timing cover you should change the timing belt when you change water pump.
how do i change a water pump in a 1991 dodge shadow with a 2.2 liter does it require an internal water pump
GM does not have a 5.4 liter it's most likely the 5.3 liter.
Get manual from the parts store or from AUTOBOOKSONLINE.COM
How to change fuel pump in 1985 cadillac fleetwood
how do you replace the water pump on cadillac cts 2004 3.6
1.25 hours