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

Left Rear of the Passenger Compartment, Above the Rear Shelf Panel


Object Number: 525033  Size: LF
(1)Wavetrap/Rear Defogger
(2)C327 (w/V4U/B9Q)
(3)C329 (w/V4U/B9Q)
(4)G303
Figure 2:

Center Front of the Passenger Compartment, in the Front of the Overhead Console


Object Number: 524995  Size: LF
(1)Power Sunroof Slide Switch
(2)Sunshade Switch
(3)Overhead Console Courtesy Lamp
(4)Noise Cancellation Microphone
(5)Outside Moisture Sensor
(6)Inside Rearview Mirror
(7)Overhead Console Courtesy Lamp
(8)Cellular Telephone Microphone
(9)Garage Door Opener
(10)Power Sunroof Vent Switch
(11)Overhead Console