First, begin with my seminal tome on the topic ==> http://fixitnow.com/wp/2010/08/23/ge-triton-xl-dishwasher-trips-circuit-breaker/
And then on to this enrichment material from Master Reg:
here's some info.
*Shorted Transorb will likely damage the main electronic control board.
click on picture
seems to be a 1.5KE220CA Bi-directional TVS Diode
1500w peak 220v C = bi-directional
Source: GE Dishwasher Mod# GSD3900L00BB