Here's the giant sticky thread on this topic. Start from the newest posts and work your way back for the most accurate info.

https://my350z.com/forum/maintenance...dow-motor.html

FWIW, you need a new window motor. I ended up getting a Dorman with mixed results. It took FOREVER for the window to settle in and auto open and close normally (7 or 8 months, if I remember correctly.) It hasn't given me any problems in about a year and a half. Be sure to follow the FSM procedure on installation, and watch whatever Youtube videos you can on how to replace it.

It a bit of a chore and will cost you about an hours' time and $50-$100 if you go aftermarket. Take it to a dealership and it'll set you back around $600-$700.