Water pumps on this engine, as far as I know, are internal. There is a water pump housing that looks like most conventional water pumps. The part you replace is inside the housing, an impeller more or less. Since the same housing is used it is common for owners to accuse mechanics of charging them for parts not replaced. Many mechanics thouroughly clean the housing in order to prevent this. If I remember correctly, remove the pump housing just as you normally would. I believe there are 3 bolts that hold the impeller in place. remove and install new. Hope it helps.
How do you change the water pump on a 1997 chevy malibu?
how to replace water pump on a 1999 chevy malibu 2.4
The water pump on a 97 Chevy Malibu 4 cylinder is replaced by removing the engine accessories, drive belt, and radiator hoses. The pump can then be unbolted, removed, and a new pump installed.
how do I remove a watwr pump on a 2005 chevy malibu
Drain the water from your 2002 Chevrolet Malibu cooling system. Remove the water pump return hose. Remove the water pump retaining bolts. Reverse the process to install the new water pump.
The cost varies, but they are not that expensive.
Drain the radiator. The thermostat is in a housing connected to the water pump. Remove the housing to replace the thermostat and gasket.
Replace water pump for an 1986 Chevy Nova?
Look inside the owners manual.