How do you change the rear hatch motor unit?

Answer Topdown Solutions website has instructions as well as repair parts, kits, and whole unit replacements. THeir instructions for the whole process are in a PDF file on the site. I have copied the http address below. Depending on the problem Hawks 3rd Gen Camaros, Brocks Camaros, and FBodyMotorsports may also provide you with small parts such as gear drives, motors, and housing units. http://www.top-downsolutions.com/Documentation/101170Instructions.pdf