Automatic Transmission Controls Schematics. GMC Truck TopKick C-Series (Conventional) C4/C5 2003

GM Service Manual Online

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2003 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Brakes 🢒 Antilock Brake System 🢒 Automatic Transmission Controls Schematics

Automatic Transmission Controls Schematics MD Transmission

Figure 1:

Module Power, Ground, Serial Data, and Indicators

Object Number: 792704 Size: FS

Master Electrical Component List
Transmission Controls, Speed Sensors, and Transmission Optional Connector
Ignition Switch, OFF/RUN/START, RUN/START, and START Bus Bars
Ignition Switch, OFF/RUN/START, RUN/START, and START Bus Bars
I/P Fuse Block, START and TRANS Fuses/Circuit Breakers
Driver Information Center (DIC)
I/P Fuse Block, R-RR TRUCK, L-RR TRUCK, GAGES, and SIR Fuses/Circuit Breaker
Underhood Fuse Block, PCM-B, HTD FUEL, A/C COMP, and RR DEFOG Fuses
B+ Bus Bar
Transmission Controls, Speed Sensors, and Transmission Optional Connector
G203 - 3 of 4

Figure 2:

Transmission Controls, Speed Sensors, and Transmission Optional Connector

Object Number: 792708 Size: FS

Master Electrical Component List
Module Power, Ground, Serial Data, and Indicator
Starter Control (LG4/LG5)
Backup Lamps
Engine Data Sensors - Injection Timing Controls
J1939 Serial Data (LG5/L18/LG4/LC8)
G203 - 3 of 4
Data Link Connector, Power, and Ground - 2 of 2
Module Power, Ground, Serial Data, and Indicator

Automatic Transmission Controls Schematics LCT Transmission

Figure 1:	Module Power, Ground, Serial Data, MIL, VSS, and Torque Signals Master Electrical Component List Overdrive Defeat and CAN Serial Data OBD II Symbol Description Notice B+ Bus Bar Ignition Switch, OFF/RUN/START, RUN/START, and START Bus Bars Underhood Fuse Block, PCM-B, HTD FUEL, A/C COMP, and RR DEFOG Fuses I/P Fuse Block, START and TRANS Fuses/Circuit Breakers I/P Fuse Block, R-RR TRUCK, L-RR TRUCK, GAGES, and SIR Fuses/Circuit Breaker Driver Information Center (DIC) I/P Fuse Block, START and TRANS Fuses/Circuit Breakers Splice Pack SP203 (L18/LB7/LG4) G203 - 2 of 4
Figure 2:	Overdrive Defeat and CAN Serial Data Master Electrical Component List PNP Switch and Trans Opt Connector Module Power, Ground, Serial Data, MIL, VSS, and Torque Signals OBD II Symbol Description Notice Underhood Fuse Block, ENGINE Fuse and I/P Fuse Block, PCM-I Fuse/Circuit Breaker Underhood Fuse Block, ENGINE Fuse and I/P Fuse Block, PCM-I Fuse/Circuit Breaker Underhood Fuse Block, ENGINE Fuse and I/P Fuse Block, PCM-I Fuse/Circuit Breaker Underhood Fuse Block, ENGINE Fuse and I/P Fuse Block, PCM-I Fuse/Circuit Breaker Underhood Fuse Block, ENG4 and ENG1 Fuses (LG4/LG5) J1939 Serial Data (LB7) Underhood Fuse Block, ENG4 and ENG1 Fuses (LG4/LG5) G101 - 1 of 2 G100 (L18)
Figure 3:	PNP Switch and Trans Opt Connector Master Electrical Component List Speed Sensors, Trim B, and Shift Solenoids Overdrive Defeat and CAN Serial Data OBD II Symbol Description Notice Controlled/Monitored Subsystem Reference G100 (L18)
Figure 4:	Speed Sensors, Trim B, and Shift Solenoids Master Electrical Component List TCC PWM and Trim A Solenoids, Pressure Switches, and TFT Sensor PNP Switch and Trans Opt Connector OBD II Symbol Description Notice
Figure 5:	TCC PWM and Trim A Solenoids, Pressure Switches, and TFT Sensor Master Electrical Component List Speed Sensors, Trim B, and Shift Solenoids OBD II Symbol Description Notice