GM Service Manual Online
For 1990-2009 cars only
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Figure 1:

TCM and Transmission, Power, Ground, Serial Data, Inputs and Outputs
Object Number: 2012512 Size: FS
Master Electrical Component List
Transmission Component and System Description
Control Module References
NSBU Switch and Toss Sensor
IGN II/III Bus - Airbag, IGN Engine and Phone/Cruise
ABS Motor, ABS Valves, HVAC Blower, HVAC Batt and TCM Fuses
Batt Main 2, Console Lighting, BCM Logic, Stop Lamps/Park Assist and IGNSW/Theft Fuses and Ignition Switch
Stop Lamps Power and Ground
Body Control Module and Ignition Switch, Power, Ground, Inputs and Outputs
Batt Main 2, Console Lighting, BCM Logic, Stop Lamps/Park Assist and IGNSW/Theft Fuses and Ignition Switch
Automatic Transmission Schematic Icons
Automatic Transmission Schematic Icons
Automatic Transmission Schematic Icons
Automatic Transmission Schematic Icons
G103, G106, G107, G108 and G109 (3.6L)
Figure 2:

NSBU Switch and TOSS Sensor
Object Number: 2012513 Size: FS
Master Electrical Component List
Transmission Component and System Description
Control Module References
TCM and Transmission, Power, Ground, Serial Data, Inputs and Outputs
Automatic Transmission Schematic Icons
Automatic Transmission Schematic Icons
G103, G106, G107, G108 and G109 (3.6L)