How do you do a radiator flush in geo prizm?

To perform a radiator flush on a Geo Prizm, first ensure the engine is cool and then locate the drain valve at the bottom of the radiator to drain the old coolant into a container. Next, close the drain valve and fill the radiator with a flushing solution mixed with water, then run the engine for about 10-15 minutes with the heater on full to circulate the solution. Afterward, turn off the engine, let it cool, and drain the flushing solution completely. Finally, refill the radiator with fresh coolant and check for leaks.