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

Behind RH Seat (Bose® and LH similar)


Object Number: 187217  Size: LF
(1)RH Rear Compartment Speaker
(2)Front Body Harness
Figure 2:

Bottom of LH "B" Pillar


Object Number: 187218  Size: LF
(1)Connector to the Radio Antenna Module
(2)Coax Cable to the Radio
(3)Front Body Harness
(4)Coax Cable from the Windshield Antenna
(5)Radio Antenna Module
(6)Coax Cable to the Antenna Buffer
Figure 3:

Inside LH Door (RH Door Similar)


Object Number: 187178  Size: LF
(1)Connector C2 - Inline beween LH Door Harness and Outside Rearview Mirror
(2)Connector C1 - Inline beween LH Door Harness and Outside Rearview Mirror
(3)Connector C201 - Inline between Instrument Panel Harness and LH Door Harness
(4)Connector C203 - Inline between Instrument Panel Harness and LH Door Harness
(5)Connector to the LH Door Speaker
(6)LH Door Speaker
(7)LH Door Control Module (DCM)