I did some poking around on this GM parts site,
http://parts.nalleygmc.com/showAssem...modelYear=2005, and it looks like both the motor and the motor module are specific to H2s. Even when I Googled the part numbers the only vehicle specifics that come up in the links are for H2s.
Part #19120867 (Windshield wiper MOTOR)
Part #15910773 (Windshield wiper motor MODULE)