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

Rear of the Headliner


Object Number: 296895  Size: LF
(1)Sunroof Motor Assembly
(2)Sunroof Module
Figure 2:

Overhead Console and Components


Object Number: 804186  Size: LF
(1)Sunroof Open/Close Switch
(2)Garage Door Opener
(3)Noise Cancellation Microphone
(4)Sunroof Vent Switch
(5)Vanity MIrror Lamp -- Right (Left Similar)
(6)Reading Lamp(s) Switch -- Left & Right
(7)Courtesy Lamps Switch
(8)Overhead Console