Powertrain Control Module (PCM)

PCM Wiring Diagram Equipped W/4L80-E Transmission (Part 1 Of 5):

C11 = SERIAL DATA.
D6 = DIAGNOSTIC TEST.
C2 = SYSTEM GROUND.
C3 = SYSTEM GROUND.
C13 = OXYGEN SENSOR GROUND.
C14 = OXYGEN SENSOR SIGNAL.
D4 = 5V REFERENCE.
C10 = MAP SIGNAL.
D2 = MAP/TTS GROUND.
D15 = TRANSMISSION TEMPERATURE SIGNAL.
C4 = +5V REFERENCE.
C5 = TPS SIGNAL.
D3 = SENSOR GROUND.
D16 = CTS SIGNAL.
B12 = A/C SIGNAL.

PCM Wiring Diagram Equipped W/4L80-E Transmission (Part 2 Of 5):

C6 = IAC "A" HI.
C7 = IAC "A" LO.
C8 = IAC "B" LO.
C9 = IAC "B" HI.
D1 = 12 VOLT BATTERY FEED.
A1 = FUEL PUMP RELAY CONTROL.
D7 = FUEL PUMP SIGNAL.

PCM Wiring Diagram Equipped W/4L80-E Transmission (Part 3 Of 5):

A7 = SERVICE ENGINE SOON LAMP CONTROL.
A4 = TCC CONTROL.
A3 = SOLENOID "A" CONTROL.
A2 = SOLENOID "B" CONTROL.
B7 = FORCE MOTOR LO.
B8 = FORCE MOTOR HI.
B4 = RANGE SIGNAL "A".
B3 = RANGE SIGNAL "B".
B2 = RANGE SIGNAL "C".

PCM Wiring Diagram Equipped W/4L80-E Transmission (Part 4 Of 5):

A12 = BRAKE SIGNAL.
C1 = 12V IGNITION.
B6 = OUTPUT SPEED LOW.
B5 = OUTPUT SPEED HIGH.
B9 = INPUT SPEED HIGH.
B10 = INPUT SPEED LOW.
B11 = TRANSMISSION OUTPUT SPEED AND VEHICLE SPEED SIGNAL.

PCM Wiring Diagram Equipped W/4L80-E Transmission (Part 5 Of 5):

C16 = INJECTOR 1 CONTROL.
C15 = INJECTOR 2 CONTROL.
A11 = EVRV SOLENOID CONTROL.
A6 = EAC SOLENOID (7.4L "C" MODEL UNDER 8500 GVW.
D5 = KNOCK SIGNAL.
D11 = EST CONTROL.
D14 = EST REFERENCE.
D12 = EST BYPASS.
D13 = EST REFERENCE LOW.