GM Service Manual Online
For 1990-2009 cars only

Reference on Schematic

Section Number - Subsection Name

Power Distribution Cell 10

8 -- Wiring Systems

Ground Distribution Cell 14

8 -- Wiring Systems

Exterior Lights Cell 110

8 -- Lighting Systems

Cruise Control Cell 34

8 -- Cruise Control

Data Link Connector Cell 50

8 -- Data Link Communications