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

Power, Ground, and Data Link Connector


Object Number: 1928568  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
JX205
Figure 2:

JX205


Object Number: 1928649  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
JX306
Power, Ground, and Data Link Connector
Figure 3:

JX306


Object Number: 1928663  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
JX205