How do I perform a shower diverter valve replacement?

To perform a shower diverter valve replacement, first turn off the water supply to the shower. Remove the handle and trim plate of the diverter valve. Unscrew and remove the old diverter valve. Install the new diverter valve by following the manufacturer's instructions. Reassemble the handle and trim plate. Turn the water supply back on and test the new diverter valve for proper function.