The filter on a GE dishwasher is located under the rotating spray arms in the basin of the machine. GE recommends that the filter and assembly, as well as the arms, are cleaned monthly.
GE dishwashers typically have two filters, a main filter and a fine filter. To clean the filters, unscrew the retaining nut and pull the spray arm off the shaft. Next, pull up on the cup handle to release the entire filter assembly. Use a cleaning brush to clean both filters or replace them as necessary. Reversing the instructions and pushing down hard re-installs the filters. GE dishwashers should never be used without the filters.