Not the motor. It's the parking circuit on the motor housing cap.
The cap contains several resistors, each one representing a certain delay speed for the intermittent function and one representing the park circuit (letting the wipers down back down when off).
You can either get the cap assembly w/ board from the dealership (expensive) or from a junkyard, which I believe 93-02 all swap around. Be prepared, this is PITA repair since the motor assembly sucks to get to.