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

Passenger Side of I/P


Object Number: 1219395  Size: LF
(1)Vehicle Communication Interface Module (VCIM)
Figure 2:

Overhead Console


Object Number: 760729  Size: SH
(1)OnStar Button Assembly
(2)OnStar Microphone
(3)Garage Door Opener