Maybe it is too new, I searched online and found none on this topic. But, there are videos doing different things, and I was able to string them together.
First, I found one video that trying to install the stereo speaker and he needs to access the door.
Secondly, I found two videos on window regulator, they are VERY helpful for me to get a general ideas.
The part is sold at 1A auto for $140.
A different car and on the passenger’s side.
A GM vehicle by 1A auto