The dishwasher will not stop at the end of the complete cycle. It starts a new cycle unless you open the door.
Answer Bob, The timer 3373626 is the more likely culprit, it is no longer available from the manufacturer. But there other circuits to test, the selector switch 3376027 routes power to the timer depending on which selection is made, and the thermostat can disrupt the power if it is "stuck" in the open position. Don't forget to check both the door switches.