With 4L80-E Automatic Transmission

PCM Wiring Diagram (Part 1 of 5):

D6 = DIAGNOSTIC TEST.
C2 = SYSTEM GROUND.
C3 = SYSTEM GROUND.
C13 = OXYGEN SENSOR GROUND.
C11 = SERIAL DATA.
C14 = OXYGEN SENSOR SIGNAL.
D4 = 5 VOLT REFERENCE.
C10 = MAP SIGNAL.
D2 = MAP/TPS GROUND.
C4 = 5 VOLT REFERENCE.
C5 = TPS SIGNAL.
D3 = TPS/ECT SENSOR GROUND.
D16 = ECT SIGNAL.
B12 = A/C REQUEST SIGNAL.

PCM Wiring Diagram (Part 2 of 5):

C6 = IAC "A" HIGH.
C7 = IAC "A" LOW.
C8 = IAC "B" LOW.
C9 = IAC "B" HIGH.
D1 = BATTERY FEED.
A1 = FUEL PUMP RELAY CONTROL.
D7 = FUEL PUMP SIGNAL.
A7 = MALFUNCTION INDICATOR LAMP CONTROL.

PCM Wiring Diagram (Part 3 of 5):

A12 = BRAKE SIGNAL.
C1 = IGNITION FEED.
B11 = VEHICLE SPEED SIGNAL.
B9 = INPUT SPEED HIGH.
B10 = INPUT SPEED LOW.

PCM Wiring Diagram (Part 4 of 5):

A10 = GOVERNOR CONTROL.
C16 = INJECTOR "A" CONTROL.
C15 = INJECTOR "B" CONTROL.
A11 = EGR CONTROL.
D5 = KNOCK SIGNAL SENSOR.
D11 = IC CONTROL.
D14 = IC REFERENCE.
D12 = IC BYPASS.
D13 = IC REFERENCE LOW.

PCM Wiring Diagram (Part 5 of 5):

D2 = SENSOR GROUND.
D15 = TRANSMISSION FLUID TEMPERATURE SIGNAL.
A4 = TCC CONTROL.
A3 = 1-2 SHIFT SOLENOID CONTROL.
A2 = 2-3 SHIFT SOLENOID CONTROL.
B7 = PRESSURE CONTROL SOLENOID SIGNAL LOW.
B8 = PRESSURE CONTROL SOLENOID SIGNAL HIGH.
B4 = RANGE SIGNAL "A".
B3 = RANGE SIGNAL "B".
B2 = RANGE SIGNAL "C".