GM Service Manual Online
For 1990-2009 cars only

Reference on Schematic

Section Number - Subsection Name

Data Link Connector (DLC) Cell 50

8 - Data Link Communications

Driver Information System Cell 86

8 - Instrument Panel, Gauges and Console

Ground Distribution Cell 14

8 - Wiring Systems

Instrument Cluster Cell 81

8 - Instrument Panel, Gauges and Console

Interior Lights Dimming Cell 117

8 - Lighting Systems

Power Distribution Cell 10

8 - Wiring Systems

Radio/Audio Cell 150

8 - Entertainment

Starting and Charging Cell 30

6 - Engine Electrical

Vehicle Speed Sensor Cell 20

6 - Engine Controls - 4.3L