Hello and Thank you for choosing Just Answer.
There is a cable that is supposed to be attached to the handle that goes down to the latch to open the door. I have a picture of how the cable attaches and maybe it will help you out.
Ok - what tool do I use to remove the screws?
And, you haven't answered the question of how the plastic part fits - the only cable I see is the one that activates when you move the lock and unlock - that is working - I do not see another cable or are you saying the lock unlock cable is what opens the door.
The plastic part is the piece that goes around the pivot - it has chrome plating on it - if I drill the rivets out - sounds like I need to buy rivets and reinstall them - is this the only way to reinstall the handle mechanism - seems like if i bought a new handle mechanism i would have the same problem of taking rivets out and putting them back in - any idea what the cost of a new interior door handle mechanism would be?
I will go back to playing around until i get your answer