GE WD21X33641 is a timer for mechanically controlled dishwashers that control the duration and sequence of wash cycles 

Potential reasons for replacement: 

1. Dishwasher not advancing through cycles (stuck stopping mid-cycle).
2. Failure to start or complete a wash cycle. 
3. Burnt or damaged contacts. 

Verify the compatibility of the part with your specific GE dishwasher model below.  This is a genuine GE appliance part

GSC3500D00BB , GSC3500D00WW , GSC3500D35BB , GSC3500D35WW , GSC3500D45BB , GSC3500D45WW , GSC3500D50BB , GSC3500D50WW , GSC3500D51BB , GSC3500D51WW , GSC3500D55BB , GSC3500D55WW , GSD3300D00BB , GSD3300D00CC , GSD3300D00WW , GSD3300D35BB , GSD3300D35CC , GSD3300D35WW , GSD3300D45BB , GSD3300D45CC , GSD3300D45WW , GSD3300D50BB , GSD3300D50CC , GSD3300D50WW , GSD3300K00BB , GSD3300K00CC , GSD3300K00WW , GSD3300K55BB , GSD3300K55CC , GSD3300K55WW , GSD3300K65BB , GSD3300K65WW , GSD3300K70BB , GSD3300K70WW , GSD3301J45BB , GSD3301J45WW , GSD3301J50BB , GSD3301J50WW , GSD3301K00BB , GSD3301K00WW , GSD3301K55BB , GSD3301K55WW , GSD3301K65BB , GSD3301K65WW , GSD3301K70BB , GSD3301K70WW , GSD3340D00SA , GSD3340D35SA , GSD3340D45SA , GSD3340D50SA , GSD3340K00SA , GSD3340K55SA , GSD3340K65SA , GSD3340K70SA , GSD3360D00SS , GSD3360D35SS , GSD3360D45SS , GSD3360D50SS , GSD3360K00SS , GSD3360K01SS , GSD3360K55SS , GSD3360K65SS , GSD3360K70SS , GSD3361J45SS , GSD3361J50SS , GSD3361K00SS , GSD3361K01SS , GSD3361K55SS , GSD3361K65SS , GSD3361K70SS , HDA3600D00BB , HDA3600D00CC , HDA3600D00WW , HDA3600D35BB , HDA3600D35CC , HDA3600D35WW , HDA3600H35BB , HDA3600H35WW , HDA3600H45BB , HDA3600H45WW , HDA3600H50BB , HDA3600H50WW , HDA3600K54BB , HDA3600K54WW , HDA3600K55BB , HDA3600K55WW , HDA3600K65BB , HDA3600K65WW , HDA3600K70BB , HDA3600K70WW , HDA3640D00SA , HDA3640D35SA ,

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