GM Service Manual Online
For 1990-2009 cars only

Reference on Schematic

Service Category Type Number - Service Category

Body Control Module - Cell 51

8-Body Control System

Data Link Connector (DLC) - Cell 50

8-Wiring Systems

Ground Distribution - Cell 14

8-Wiring Systems

Horns - Cell 40

8-Horns

Keyless Entry - Cell 132

8-Keyless Entry

Power Distribution - Cell 10

8-Wiring Systems

Starting and Charging - Cell 30

6-Engine Electrical