Power and Grounds
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
Battery positive voltage is supplied at all times to the sunroof control module assembly from the 25 A S/ROOF fuse located in the underhood fuse block. Ground is supplied to the sunroof control module through the module ground circuit and G403.
Ground is supplied to the sunroof switch through the switch ground circuit and the sunroof control module.