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

VCIM Location


Object Number: 1416103  Size: SF
(1)Vehicle Communication Interface Module (VCIM)
(2)I/P Harness
Figure 2:

Cellular and Navigation Antenna Coax Harness Routing


Object Number: 1456876  Size: LF
(1)Cellular and Navigation Antenna - Coax Connectors
(2)C205 - Coax Connector
(3)I/P Harness
Figure 3:

Cellular and Navigation Antenna Coax Harness Routing


Object Number: 1694035  Size: MF
(1)Cellular and Navigation Antenna