GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2002 🢒 Park Avenue 🢒 Body and Accessories 🢒 Data Link Communications 🢒 Data Link Connector Schematics
Figure 1:

Power, Ground and Serial Data Lines
Object Number: 659401 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Class 2 Serial Data Line
Left Underhood Fuse Block- BAT 1/ Rear Fuse Block- RDM, C/LTR, DDM, HTDST L, TRK REL Fuses and Trunk Lid Release Relay/ IP Fuse Block- PDM, SBM, CSTR/SBM Fuses
VIU and VCU Signals
G202 (1 of 4)
G202 (4 of 4)
Class 2 Serial Data Line
Figure 2:

Class 2 Serial Data Line
Object Number: 659399 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Power, Ground and Serial Data Lines
Power, Ground and Serial Data Lines
SIR Caution