GM Service Manual Online
For 1990-2009 cars only

Automatic Transmission Controls Schematics MD

Figure 1:

Module Power, Ground, and Shift Selector


Object Number: 1909023  Size: FS
Master Electrical Component List
Control Module References
Switches, Sensors, and Transmission Optional Connector
AIRBAG, GAGES, LT REAR TURN/STOP, and RT REAR TURN/STOP Fuses/Circuit Breakers
AIRBAG, GAGES, LT REAR TURN/STOP, and RT REAR TURN/STOP Fuses/Circuit Breakers
DIC
TRANS Fuse/Circuit Breaker
TRANS Fuse/Circuit Breaker
TRANS Fuse/Circuit Breaker
G203 - 2 of 4
High Speed GMLAN
A/C COMP, HTD FUEL, PCM-B and RR DEFOG Fuses
A/C COMP, HTD FUEL, PCM-B and RR DEFOG Fuses
J1939 Serial Data, 2 of 2 - L18 w/JE4, LF6, LF8
J1939 Serial Data, 1 of 2 - L18 w/JE4, LF6, LF8
Figure 2:

Switches, Sensors, and Transmission Optional Connector


Object Number: 1909025  Size: FS
Master Electrical Component List
Control Module References
Serial Data, Speed Sensor
Module Power, Ground, and Shift Selector
Figure 3:

Serial Data, Speed Sensor


Object Number: 1909027  Size: FS
Master Electrical Component List
Control Module References
Switches, Sensors, and Transmission Optional Connector
Backup Lamp Control

Automatic Transmission Controls Schematics LCT

Figure 1:

Module Power, Ground, Serial Data, MIL, VSS, and Torque Controls


Object Number: 1909041  Size: FS
Master Electrical Component List
Control Module References
Overdrive Defeat Switch and CAN Serial Data
A/C COMP, HTD FUEL, PCM-B and RR DEFOG Fuses
A/C COMP, HTD FUEL, PCM-B and RR DEFOG Fuses
TRANS Fuse/Circuit Breaker
TRANS Fuse/Circuit Breaker
TRANS Fuse/Circuit Breaker
AIRBAG, GAGES, LT REAR TURN/STOP, and RT REAR TURN/STOP Fuses/Circuit Breakers
AIRBAG, GAGES, LT REAR TURN/STOP, and RT REAR TURN/STOP Fuses/Circuit Breakers
DIC
Splice Pack SP203
High Speed GMLAN
High Speed GMLAN
J1939 Serial Data, 2 of 2 - L18 w/JE4, LF6, LF8
G203 - 2 of 4
Figure 2:

Overdrive Defeat Switch and CAN Serial Data


Object Number: 1909046  Size: FS
Master Electrical Component List
Control Module References
C102 - Upfitter TRANS OPT Connector and Internal Mode Switch
Module Power, Ground, Serial Data, MIL, VSS, and Torque Controls
Backup Lamp Control
G101 - 1 of 2
ENGINE and PCM-1 Fuses/Circuit Breakers
ENGINE and PCM-1 Fuses/Circuit Breakers
ENG-1 and ENG-4 Fuses - L18/LMM
ENG-1 and ENG-4 Fuses - L18/LMM
ENG-1 and ENG-4 Fuses - L18/LMM
ENGINE and PCM-1 Fuses/Circuit Breakers
ENGINE and PCM-1 Fuses/Circuit Breakers
ENGINE and PCM-1 Fuses/Circuit Breakers
Ground Distribution Schematics
Figure 3:

C102 - Upfitter TRANS OPT Connector and Internal Mode Switch


Object Number: 1909049  Size: FS
Master Electrical Component List
Control Module References
Speed Sensors, Trim B and Shift Solenoid
Overdrive Defeat Switch and CAN Serial Data
TCC PWM and Trim A Solenoid Valves, Pressure Switch Manifold and TFT Sensor
w/LF6
w/o LF6 2 of 2
Figure 4:

Speed Sensors, Trim B and Shift Solenoid


Object Number: 1909061  Size: FS
Master Electrical Component List
Control Module References
TCC PWM and Trim A Solenoid Valves, Pressure Switch Manifold and TFT Sensor
C102 - Upfitter TRANS OPT Connector and Internal Mode Switch
Figure 5:

TCC PWM and Trim A Solenoid Valves, Pressure Switch Manifold and TFT Sensor


Object Number: 1909073  Size: FS
Master Electrical Component List
Control Module References
Speed Sensors, Trim B and Shift Solenoid
C102 - Upfitter TRANS OPT Connector and Internal Mode Switch