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

Overhead Console


Object Number: 906337  Size: MF
(1)Cellular Microphone
(2)Noise Compensation Microphone (UQA w/Class 2 Amp)
(3)Overhead Console
Figure 2:

Antennas


Object Number: 851793  Size: LF
(1)Cellular and Navigation Antenna
(2)Cellular Antenna Connector
(3)Navigation Antenna Connector
(4)Front Roof Panel
Figure 3:

Vehicle Communication Interface Module (VCIM) - Short Wheelbase (SWB)


Object Number: 825916  Size: MF
(1)Connectors
(2)Body Harness
(3)Rear Floor Panel
(4)Vehicle Communication Interface Module (VCIM)
Figure 4:

Vehicle Communication Interface Module (VCIM) - Long Wheelbase (LWB)


Object Number: 825918  Size: MF
(1)Vehicle Communication Interface Module (VCIM)
(2)Rear Floor
(3)Connectors