GM Service Manual Online
For 1990-2009 cars only

Reference on Schematic

Section Number Subsection Name

Cruise Control - Cell 34

8-Wiring Systems

Data Link Connector - Cell 50

8-Wiring Systems

Ground Distribution - Cell 14

8-Wiring Systems

Instrument Cluster - Cell 81

8-Wiring Systems

PCM (all other gas) - Cell 21

6-Engine Controls

Power Distribution - Cell 10

8-Wiring Systems

VCM (4.3L) - Cell 20

6-Engine Controls