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2017-21 Gen V 3 WIRE 5.3/6.2 LT1 L83 L84 L86 L87 w/ 4L60-75E Standalone 93+

2017-21 Gen V 3 WIRE 5.3/6.2 LT1 L83 L84 L86 L87 w/ 4L60-75E Standalone 93+

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WE also have GEN V 6L80E/6L90E T56 3 wire 4 wire 8L90E 3 wire 4 wire 

WARNING:: WARNING: ECU NOT INCLUDED This is a 4 wire. In 2017 is was a split year for 3 wire and 4 wire so please make sure you know which wire you have. This harness is for a car or truck pedal. This harness is also for a 2 wire alternator. If you have a 4 wire alternator which is rare then you can buy a convertor adapter from holley.

  • Description

    This is the same setup that PSICONVERSION will sell you for $1620.00. With a long wait period.

    COMES WITH TCM CONTROLLER LT1 and 4L80 conversion HARNESS

    APPLICATION: 2017 – 2021 3 wire GEN V LT1 and L83 / L86 ECOTEC3 ENGINES WITH 
    Transmissions
    4L60-75E or EV 93+

    Complete engine wiring harness, Instruction Manual Fuse/Relay Box Fuel Pump Control (Relay included) Fan control option wires, Check Engine Light, Speedo output, Tachometer, OBD2 Port Accelerator Pedal and Throttle Body control (DBW setups) IAC and TPS on DBC setups MAF Sensor MAP Sensor Engine Coolant Temp Sensor Alternator Control (2) Upstream Oxygen Sensors Crankshaft Position Camshaft Position Fuel Injectors Coil Packs Automatic or Manual Transmission control Knock Sensors 

    PARTS INCLUDED: Complete engine and transmission wiring harness, Instruction Manual

    • Fuse/Relay Box
    • Fuel Pump Control (Relay included)
    • Fan controls (Relays and fuse available seperately KIT-1010)
    • Check Engine Light, Speedo output, Tachometer, OBD2 Port
    • Accelerator Pedal and Throttle Body control (DBW setups)
    • IAC and TPS on DBC setups
    • MAF Sensor connector
    • MAP Sensor connector
    • Engine Coolant Temp Sensor
    • Alternator Control
    • (2) Upstream Oxygen Sensors
    • Crankshaft Position
    • Camshaft Position
    • Fuel Injector connectors
    • Coil Pack connectors
    • Automatic or Manual Transmission control
    • Knock Sensors

    NOTES: These harnesses are designed for retrofitting ’2017-2021 3 wire LT1/L83/L86 GEN V engines with a into older muscle cars and street rods or newer non-emissions controlled vehicles. They are completely plug and play with four wire hookup (switched power, constant power and ground connections required). Harnesses are designed with a sliding grommet seal and 4 – 5 feet of length from the rear of the cylinder head to the PCM mounting position under the vehicle dashboard. A sliding grommet seal allows for professional, leak proof installation.

    ADDITIONAL ITEMS REQUIRED: E92 ECM, 

    ADDED FEATURES INCLUDE 

    1 YEAR WARRANTY

    36" ADDED LENGTH FOR EASY COMPUTER MOUNTING

    UPGRADED WIRE FOR RUNNING THOSE BIG INJECTORS (will run any size injector without issues) 

    UPGRADED 60-AMP RELAYS 


    Harness comes with a complete install instruction packet.