Without 4L80-E Automatic Transmission

ECM Wiring Diagram Except 4L80-E Transmission (Part 1 Of 4):

A5 = SERVICE ENGINE SOON LIGHT CONTROL.
C7 = HIGH GEAR SWITCH SIGNAL.
A7 = A/T TCC CONTROL SWITCH (GROUND).
A10 = VEHICLE SPEED SENSOR SIGNAL.
A4 = EGR SOLENOID (M/L)
A4 = EVRV SOLENOID (S/T).
B10 = PARK NEUTRAL SWITCH (A/T).
A6 = 12 VOLT IGNITION.
B7 = KNOCK RETARD SIGNAL (ESC).

ECM Wiring Diagram Except 4L80-E Transmission (Part 2 Of 4):

B8 = A/C SIGNAL.
B1 = 12 VOLT
C16 = 12 VOLT
A1 = FUEL PUMP RELAY DRIVE (12V).
B2 = FUEL PUMP SIGNAL.
A5 = SERVICE ENGINE SOON LIGHT CONTROL.
C7 = HIGH GEAR SWITCH SIGNAL.
A7 = A/T TCC CONTROL (GROUND).

ECM Wiring Diagram Except 4L80-E Transmission (Part 3 Of 4):

A10 = VEHICLE SPEED SENSOR SIGNAL.
B10 = PARK NEUTRAL SWITCH (A/T)(12V).
A4 = EGR SOLENOID.
A5 = 12V IGNITION.
C2 = EAC SOLENOID (4.3L)
B7 = KNOCK RETARD SIGNAL (ESC).

ECM Wiring Diagram Except 4L80-E Transmission (Part 4 Of 4):

A6 = 12V IGNITION.
D16 = INJECTOR DRIVER.
D14 = INJECTOR DRIVER.
D4 = EST.
B5 = REFERENCE.
D5 = BYPASS.
B3 = REFLOW.