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

Sensor Ground Cell 20

6 - Engine Controls

Transfer Case Control Module Cell 38

4 - Transfer Case

Cruise Control Module (CCM) Cell 34

8 - Cruise Control

Electronic Brake Control Module (EBCM) Cell 44

5 - ABS Traction Control

Brake Transmission Shift Interlock (BTSI) Cell 138

2 - Steering Wheel And Column