The 6 pin Chevy SSR window regulator motor is specific to the truck. Some companies will advertise that they have a new one for sale, but they are using an outdated cross reference guide that is incorrect. The only way to repair the regulator to get the window operating again is to get a rebuilt unit or to send yours out to get rebuilt.
Here are some companies that offer rebuilding services for the SSR. Please make sure you contact them and insure that they still work specifically on the SSR. If you note someone on this list that does no longer offers the service please let me know so I can remove them, likewise, please let me know if I am missing anyone.