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

Headliner


Object Number: 264449  Size: LF
(1)Power Sunroof Switch Assembly Connector
(2)Inside Rearview Mirror Connector
(3)Dome Lamp
(4)Sunroof Assembly
Figure 2:

Sunroof Assembly


Object Number: 762410  Size: LF
(1)Sunroof Module
(2)Sunroof Motor
Figure 3:

Dome Lamp and Sunroof Switch


Object Number: 291763  Size: LF
(1)Dome Lamp
(2)Sunroof Switch