I have recently sold a few timeshares to try generate some income to pay for my son's medical expenses. (didnt make a dent into our over million dollar bills, but i can now afford to send them a hundred a week so they dont report me to the collection agency.)
There are different procedures for different places. I have used First American Title Insurance Agency. They do these everyday. They are very helpful. They hold the money in escrow until it settles and then send you a nice check. The settlement fees are only a few hundred bucks.
https://www.vacationfirst.firstam.com/
They are recommended by redweek.com too.