Turn off the power supply to your GE dishwasher from your kitchen circuit breaker.
Open the dishwasher door, and pull out the bottom rack. Lift the rack while pulling it out to fully remove it from the dishwasher.
Turn the lower spray arm in the bottom center of the dishwasher counterclockwise to unlock it.
Lift the lower spray arm, and pull it out of the dishwasher. Locate the sump filter screen at the bottom center of the dishwasher.
Remove the two bolts from the sump filter using a 1/4-inch nut driver. Lift the sump filter to remove it from the unit.
Inspect the sump filter for any damage, such as dents or broken pieces, or wash the filter with warm running water and soap.