How do you change oil pump in 2005 Malibu?

To change the oil pump in a 2005 Chevy Malibu, first disconnect the battery and drain the engine oil. Remove the oil pan by unbolting it and carefully prying it off, then locate and remove the old oil pump. Install the new oil pump, ensuring proper alignment and sealing, reattach the oil pan, and refill the engine with oil before reconnecting the battery and starting the engine to check for leaks. Always consult a repair manual for specific torque specifications and procedures.