The Timer is an OEM part for GE dishwashers. It regulates the various cycles of the dishwasher, such as washing, rinsing, and drying, ensuring each phase occurs for the appropriate amount of time. Causes of a bad timer can include electrical failures, wear and tear over time, or mechanical issues that disrupt the timer's ability to accurately control the dishwasher's cycles. A malfunctioning timer can result in incomplete washing or rinsing, affecting the dishwasher's overall performance. Symptoms of a bad timer include: Dishwasher cycles running too long or too short Dishwasher not advancing to the next cycle Dishwasher stopping mid-cycle Inconsistent cleaning results This GE replacement part is also compatible with Hotpoint, RCA, and some Kenmore models.Part Number WD21X33642 (AP7216310) replaces WD21X10379.