How to flush radiator on 1993 Buick Regal?

To flush the radiator on a 1993 Buick Regal, first ensure the engine is cool, then locate the radiator drain plug at the bottom and place a container underneath to catch the coolant. Open the drain plug and allow the old coolant to fully drain out. Next, close the drain plug and fill the radiator with a mixture of water and radiator flush solution, running the engine with the heater on for about 10-15 minutes. Finally, drain the flush solution, refill the radiator with fresh coolant, and check for leaks.