GM Service Manual Online
For 1990-2009 cars only

Reference on Schematic

Section Number - Subsection Name

Data Link Connector (DLC) - Cell 50

8-Wiring systems

Exterior Lights - Cell 110

8-Lighting Systems

Ground Distribution - Cell 10

8-Wining Systems

Horns - Cell 40

8-Horns

Interior Lights - Cell 114

8-Lighting Systems

Rear Defogger - Cell 61

1-Stationary Windows

Starting and charging - Cell 30

6-Engine Electrical