How do you change wiper transmission on Chevy blazer 2003?

To change the wiper transmission on a 2003 Chevy Blazer, first disconnect the negative battery cable to avoid any electrical issues. Remove the wiper arms by loosening the nuts and lifting them off the splines. Next, detach the interior trim panel and any necessary components to access the wiper transmission. Finally, unbolt the old transmission, replace it with the new one, and reassemble everything in reverse order, ensuring proper alignment and functionality of the wipers.