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Visit my Facebook page for a lot of New Pictures & Harness Guides YouTube channel for How To videos  - E-Mail: brendan@lt1swap.com

Here are the power train controls schematics for 2004 5.7L GTO

 

AUTO TRANS

CHARGING

DATA LINK 1 OF 2

DATA LINK 2 OF 2

FUEL INJECTORS

FUEL PUMP

OXYGEN SENSORS

IAC VALVE, COOLANT TEMP, CAM, CRANK SENSORS

COILS 1 OF 2

COILS 2 OF 2

KNOCK SENSORS, MAP SENSOR

MANUAL TRANS, EVAP, MASS AIRFLOW

PCM POWER GROUND

PARK-NEUTRAL SW

PCM INPUT/OUTPUTS

STARTING

THROTTLE RELAXER SYSTEM, TPS