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

Cruise Control - Cell 34

8 - Cruise Control

Data Link Connector - Cell 50

8 - Wiring Systems

Exterior Lights - Cell 110

8 - Lighting Systems

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

Low Tire Pressure Warning - Cell 48

3 - Tire Pressure Monitoring

Power Distribution - Cell 10

8 - Wiring Systems

Powertrain Control Module - Cell 20

6 - Engine Controls - 3.1L

Powertrain Control Module - Cell 20

6 - Engine Controls - 3.8L

Steering Controls: Magnetic Steering Variable Assist - Cell 45

2 - Variable Effort Steering