Take out the three screws that hold the bottom panel in place and take it off. Then reach up with your hand to the door switch. You will feel a plastic tab. Pull down on it gently and it will release your door lock.
I don't know who told you to use it with a bad pump, but do not listen to them anymore. They are not good people (at least as far as a Kenmore HE 3 are concerned).
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