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GEN IV Engine w/ 6L80E Standalone Harness


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Selected Size Sold Out! Pre-order Now - Shipping June 2018
SKU: HAR-1086
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  • APPLICATION: 2006 - Present Gen IV 58x ENGINES WITH 6L80E or 6L90E

    LS2 58X 6.0 from Corvette and Trailblazer SS, LS3 6.2, GMPP LS376, LS7 7.0 from Corvette and Camaro ZL1, Vortec LY6, L92, L76, LMG, 4.8, 5,3, 6.0 and 6.2 engines

    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
    • 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

    NOTES: These Harnesses are designed for retrofitting any Gen IV 58X engine with 6L80E or 6L90E transmissions 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 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.

    Harnesses are professionally constructed from Brand New GM Delphi Connectors and TXL (Polyethylene Cross Linked) High Temperature Wire to GM Specifications. All Harnesses are 100% Quality Inspected prior to shipping. Note that Harnesses are for non-emissions equipped vehicles and do not include air pump or EGR provisions. All Harnesses require PCM VATs removal, available through PSI. Please contact PSI for more information.

    • My harness has worked perfectly .
      I would highly recommend Psi to anyone doing a LS swap. All of their employees are highly knowledgeable and willing to assist in anyway they can to get you on the road!



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    • Excellent Product
      Not only do they have the best product with the best pricing they have the BEST AFTER SALE SUPPORT ! When your lost or just don't understand EFI that well or your having technical issues you just don't understand their support staff is always there and always willing to help.
      Prevatt Automotive


      Tulsa Oklahoma

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    • Should have done this from the get go
      Everything worked as it should. Fired up first time.  Everything worked 



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