After searching for most of the day to find this part, which costs almost $80, I changed the lock, plugged the washer back in and it made no difference at all.
The door still wont lock. and the part can't be returned.
All in all, including my time, gas and the part, I figure I'm out of pocket close to $200, and now I have to call in a repair service anyway. so I don't think i'll be accepting your answer