WARNING: This page is about a different car, the 2010 GMC Terrain and 2010 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Module Power, Grounds, and Serial Data References
Courtesy of GENERAL MOTORS CORP.
Fig 2: Power Moding, Shift Lock, Headlights, Starting/Charging, Cruise Control, Wipers/Washers, and Hydraulic Brake References
Courtesy of GENERAL MOTORS CORP.
Fig 3: Exterior Lights, Radio, ABS, Theft Deterrent, and Remote Function References
Courtesy of GENERAL MOTORS CORP.
Fig 4: Interior Lights, Door Locks, Brakes, Release Systems, Ignition Lock, and Automatic Transmission References