GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Power Sunroof Component Views


Object Number: 400783  Size: LF
(1)Power Sunroof Switch
(2)C398
(3)Power Sunroof Motor
Figure 2:

Center of Windshield Header


Object Number: 298873  Size: SH
(1)Sunroof Switch Connector