(Update) How can I fix my window knob on my Chrysler Sebring convertible?

kitkat1

Member
I asked the same question before. I removed a hidden screw, but then I am stuck, nothing is moving.
For the new picture of it, click at http://taxtipcalculator.com/ebay-craigslist/images-ebay/car%20001.JPG
My rear left window was not working, I moved more roughly the knob for this window and it works. I would like to remove the cover on the picture to be able to see what is below and the window knob and maybe replace it. But I can't remove the cover.
Once I removed the screw, what tool should I se and how to remove what's left?
 
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