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

Engine Controls Cell 20

6 - Engine Controls

Electronic Brake Control Module Cell 44

5 - ABS Traction Control

Body Control Module Cell 51

8 - Body Control System