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

RH Side of IP


Object Number: 447354  Size: LF
(1)I/P Harness
(2)Body Control Module (BCM)
(3)Relay Center
(4)Rear Window Defogger Relay
(5)Theft Deterrent Relay
Figure 2:

Below RH Side of IP


Object Number: 447155  Size: LF
(1)Body Control Module (BCM)
(2)Body Control Module (BCM) Connector C2
(3)Body Control Module (BCM) Connector C1
(4)I/P Harness