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

Module Power, Ground, Malfunction Indicator Lamp (MIL), Hold Lamp and Serial Data
Object Number: 1962538 Size: FS
Master Electrical Component List
Control Module References
Stop Lamp Switch and Transmission Solenoids
Fuse Block - Underhood B+ Bus, 1 of 3
Fuse Block - Underhood B+ Bus, 1 of 3
Vehicle Speed and Input Speed Sensors
Park/Neutral Position (PNP) Switch
Data Communication
G101
G203
G201 - 1 of 2
Figure 2:

Stop Lamp Swtich and Transmission Solenoids
Object Number: 1962558 Size: FS
Master Electrical Component List
Control Module References
Vehicle Speed and Input Speed Sensors
Module Power, Ground, Malfunction Indicator Lamp (MIL), Hold Lamp, and Serial Data
Fuse Block - Underhood B+ Bus, 1 of 3
Fuse Block - Underhood B+ Bus, 1 of 3
Figure 3:

Vehicle Speed and Input Speed Sensors
Object Number: 1962562 Size: FS
Master Electrical Component List
Control Module References
Park/Neutral Position (PNP) Switch
Stop Lamp Switch and Transmission Solenoids
Module Power, Ground, Malfunction Indicator Lamp (MIL), Hold Lamp, and Serial Data
G201 - 1 of 2
Figure 4:

Park/Neutral Position (PNP) Switch
Object Number: 1962567 Size: FS
Master Electrical Component List
Control Module References
Vehicle Speed and Input Speed Sensors
Starting
Module Power, Ground, Malfunction Indicator Lamp (MIL), Hold Lamp, and Serial Data
Park Lamps and License Plate Lamps
G201 - 1 of 2