Turn off the circuit breaker for the dishwasher in your home's service panel.
Open the dishwasher door, and then remove the six screws securing the control panel from the top of the inner door panel.
Close the dishwasher door, but do not latch it.
Tilt the control panel down, and then remove the wire connectors. To remove each connector, depress the tab on the connector, and then pull the connector off of the control panel.
Depress the four locking tabs on the control panel frame, and remove the user interface panel from the frame.
Depress the two tabs above the door handle assembly, and then side the handle down and out of the user interface.
Install the new door handle assembly into the user interface, ensuring that the tabs lock into place.
Snap the user interface back into the control panel frame.
Reconnect the wire connectors to the control panel, and then align the control panel with the top of the door.
Secure the control panel to the door using the screws that were removed from the top of the inner door panel.
Close the dishwasher door, and then restore the dishwasher's power supply.