Locate the breaker for the dishwasher in your main service panel. Turn off the breaker to cut power to the appliance.
Remove the bottom panel of the dishwasher by taking out the screws securing it in place. Pull the panel away from the dishwasher.
Remove the mounting screw that secures the water inlet valve. Move the valve out of the way so you can access the heating element terminals. The water inlet valve is located on the left side of the bottom compartment, and it is connected to the water supply valve.
Pull the wires off the two heating element terminals.
Use an adjustable wrench or a 1/2-inch open-end wrench to remove the nuts securing the heating element terminals to the dishwasher.
Open the dishwasher and remove the lower dish rack.
Remove the lower wash arm, which is secured by two tabs on the bottom of the arm.
Pull the heating element terminals through the bottom of the dishwasher, then release the element from the brackets holding it in position.
Remove the heating element from the dishwasher.