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

Power, Ground, Stop Lamp Switch, and Driver Shift Request Switch


Object Number: 1778474  Size: FS
Master Electrical Component List
Electronic Component Description
Control Module References
MIL Control, Serial Data, Shift Solenoids, PCS2, Torque Signals, and Tow/Haul Switch
Automatic Transmission Schematic Icons
Ignition Switch - START, RUN, and ACC/RUN/START BUS BARS, IGN A, and CRNK Fuses
4WD, BRK, CRUISE, HTR/AC, and HVAC 1 Fuses
Ignition Switch - START, RUN, and ACC/RUN/START BUS BARS, IGN A, and CRNK Fuses
4WD, BRK, CRUISE, HTR/AC, and HVAC 1 Fuses
4WD, BRK, CRUISE, HTR/AC, and HVAC 1 Fuses
IGN 0, RR WPR, SEO ACCY, TBC ACCY, TBC IGN 0, and WS WPR Fuses
B+ Bus Bar
Ignition Switch - START, RUN, and ACC/RUN/START BUS BARS, IGN A, and CRNK Fuses
4WD, BRK, CRUISE, HTR/AC, and HVAC 1 Fuses
G102, G103, and G108 - Diesel
G103 and G106 - Gas
Figure 2:

MIL Control, Serial Data, Shift Solenoids, PCS2, Torque Signals, and Tow/Haul Switch


Object Number: 1778475  Size: FS
Master Electrical Component List
Electronic Component Description
Control Module References
Fluid Pressure Switches, PCS1, TCC PCS, Mod Main Solenoid, and FTP Sensor
Power, Ground, Stop Lamp Switch, and Driver SHift Request Switch
Automatic Transmission Schematic Icons
Transfer Case NVG 261-NP2 Control Schematics
Power, Ground, Serial Data, and Transfer Case Encoder Motor
Power Take Off Schematics
Power, Ground, DLC and Splice Pack SP205
G203 - 2 of 2
High Speed GM LAN 8.1L and Diesel
Figure 3:

Fluid Pressure Switches, PCS1, TCC PCS, Mod Main Solenoid, and TFT Sensor


Object Number: 1778484  Size: FS
Master Electrical Component List
Electronic Component Description
Control Module References
Internal Mode Switch (IMS) and Speed Sensors
MIL Control, Serial Data, Shift Solenoids, PCS2, Torque Signals, and Tow/Haul Switch
Automatic Transmission Schematic Icons
Internal Mode Switch (IMS) and Speed Sensors
Figure 4:

Internal Mode Switch (IMS) and Speed Sensors


Object Number: 1778486  Size: FS
Master Electrical Component List
Electronic Component Description
Control Module References
Fluid Pressure Switches, PCS1, TCC PCS, Mod Main Solenoid, and FTP Sensor
Automatic Transmission Schematic Icons
Automatic Transmission Schematic Icons
Automatic Transmission Schematic Icons
Fluid Pressure Switches, PCS1, TCC PCS, Mod Main Solenoid, and FTP Sensor