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

Roof Headliner, Front


Object Number: 1212236  Size: LF
(1)Inside Rearview Mirror Connector
(2)LH Courtesy/Reading Lamp (TR9)
(3)RH Courtesy/Reading Lamp (TR9)
(4)Sunroof Switch
Figure 2:

Power Sunroof Component views


Object Number: 1542523  Size: MF
(1)C398
(2)Sunroof Motor