EFI Wiring Harness
  • 1986-93 GM 4.3/5.0/5.7/7.4L TBI


  • EFI Wiring Harness
  • 1985-89 GM 5.0L/5.7L TPI
  • Mass Air Flow


  • EFI Wiring Harness
  • 1990-92 GM 5.0L/5.7L TPI
  • MAP Or Speed Density

  • Painless Performance Products EFI Wiring Harness 1990-92 GM 5.0L/5.7L TPI


    EFI Wiring Harness
  • 1990-92 GM 5.0L/5.7L TPI
  • MAP Or Speed Density
  • Requires VATS Module
    764-64023
  • With 4 Extra Feet Of Wiring
  • Ships in 24hrs
    FREE Shipping
    Lowest Price Guarantee
    $579.99
    View Price In Cart

    EFI Wiring Harness
  • 1996-99 GM Vortec 5.0L/5.7L V8


  • EFI Wiring Harness
  • 1996-99 GM Vortec 4.3L V6


  • EFI Wiring Harness
  • 1999-2006 GM Vortec 4.8/5.3/6.0L
  • Mechanical Throttle
  • Painless Performance Products EFI Wiring Harness 1999-2006 GM Vortec 4.8/5.3/6.0L


    EFI Wiring Harness
  • 1999-2006 GM Vortec 4.8/5.3/6.0L
  • Mechanical Throttle
  • Includes Free ECM Reflash With Purchase
  • Ships Today
    FREE Shipping
    Lowest Price Guarantee
    $674.99
    View Price In Cart
    (2)

    Painless Performance Products EFI Wiring Harness 1999-2006 GM Vortec 4.8/5.3/6.0L


    EFI Wiring Harness
  • 1999-2006 GM Vortec 4.8/5.3/6.0L
  • Mechanical Throttle
  • With 4 Extra Feet Of Wiring
  • Includes Free ECM Reflash With Purchase
  • Ships in 24hrs
    FREE Shipping
    Lowest Price Guarantee
    $724.99
    View Price In Cart

    EFI Wiring Harness
  • 2000-02 GM Vortec 4.8/5.3/6.0L
  • Throttle-by-Wire

  • EFI Wiring Harness
  • 2003-06 GM 4.8/5.3/6.0L
  • Painless Performance Products EFI Wiring Harness 2003-06 GM 4.8/5.3/6.0L


    EFI Wiring Harness
  • 2003-06 GM 4.8/5.3/6.0L
  • Throttle-by-Wire
  • Using Factory ECM
  • Will Work With Flex Fuel Engines
  • Includes Free ECM Reflash With Purchase
  • Ships Today
    FREE Shipping
    Lowest Price Guarantee
    $949.99
    View Price In Cart

    EFI Wiring Harness
  • 1992-97 GM LT1

  • Painless Performance Products EFI Wiring Harness 1992-97 GM LT1


    EFI Wiring Harness
  • 1992-97 GM LT1
  • Includes VATS Module To Enable Use Of Stock ECU
  • With 4 Extra Feet Of Wiring
  • Ships in 24hrs
    FREE Shipping
    Lowest Price Guarantee
    $749.99
    View Price In Cart
    (1)

    EFI Wiring Harness
  • 1999-2002 GM LS1/LS6
  • Mechanical Throttle Body
  • Painless Performance Products EFI Wiring Harness 1999-2002 GM LS1/LS6


    EFI Wiring Harness
  • 1999-2002 GM LS1/LS6
  • With 4L60E or T-56 Transmission
  • Mechanical Throttle Body
  • Includes Free ECM Reflash With Purchase
  • Ships Today
    FREE Shipping
    Lowest Price Guarantee
    $624.99
    View Price In Cart

    Painless Performance Products EFI Wiring Harness 1999-2002 GM LS1/LS6


    EFI Wiring Harness
  • 1999-2002 GM LS1/LS6
  • With 4L60E or T-56 Transmission
  • Mechanical Throttle Body
  • With 4 Extra Feet Of Wiring
  • Includes Free ECM Reflash With Purchase
  • Ships Today
    FREE Shipping
    Lowest Price Guarantee
    $674.99
    View Price In Cart
    (1)

    EFI Wiring Harness
  • 1997-2004 GM LS1/LS6
  • Throttle-by-Wire
  • Painless Performance Products EFI Wiring Harness 1997-2004 GM LS1/LS6


    EFI Wiring Harness
  • 1997-2004 GM LS1/LS6
  • With 4L60E or T-56 Transmission
  • Throttle-by-Wire
  • Includes Free ECM Reflash With Purchase
  • Ships in 24hrs
    FREE Shipping
    Lowest Price Guarantee
    $674.99
    View Price In Cart
    (1)

    Painless Performance Products EFI Wiring Harness 1997-2004 GM LS1/LS6


    EFI Wiring Harness
  • 1997-2004 GM LS1/LS6
  • With 4L60E or T-56 Transmission
  • Throttle-by-Wire
  • With 4 Extra Feet Of Wiring
  • Includes Free ECM Reflash With Purchase
  • Ships in 24hrs
    FREE Shipping
    Lowest Price Guarantee
    $724.99
    View Price In Cart

    EFI Wiring Harness
  • 2005-06 GM LS2
  • Throttle-by-Wire
  • Painless Performance Products EFI Wiring Harness 2005-06 GM LS2


    EFI Wiring Harness
  • 2005-06 GM LS2
  • With 24x Crank Reluctor & 2x Cam Reluctor
  • With 4L60E or T-56 Transmission
  • Throttle-by-Wire
  • Includes Free ECM Reflash With Purchase
  • Ships in 24hrs
    FREE Shipping
    Lowest Price Guarantee
    $724.99
    View Price In Cart

    EFI Wiring Harness
  • 2006-08 GM LS2/LS3/LS7
  • Painless Performance Products EFI Wiring Harness 2006-08 GM LS2/LS3/LS7


    EFI Wiring Harness
  • 2006-08 GM LS2/LS3/LS7
  • With 4L65E, 4L70E, 4L80E, 4L85E Transmission
  • Includes Free ECM Reflash With Purchase
  • Ships in 24hrs
    FREE Shipping
    Lowest Price Guarantee
    $949.99
    View Price In Cart

    EFI Wiring Harness
  • 2007-13 GM Truck/SUV 4.8/5.3/6.0/6.2L
  • Painless Performance Products EFI Wiring Harness 2007-13 GM Truck/SUV 4.8/5.3/6.0/6.2L


    EFI Wiring Harness
  • 2007-13 GM Truck/SUV 4.8/5.3/6.0/6.2L
  • Includes Free ECM Reflash With Purchase
  • Estimated Ship Date: 04/17/17
    FREE Shipping
    Lowest Price Guarantee
    $1,024.99
    View Price In Cart

    Integrated EFI & Chassis Wiring Harness
  • 1997-2004 GM LS1/LS6
  • Cable Throttle Body

  • Integrated EFI & Chassis Wiring Harness
  • 1999-2006 GM 4.8/5.3/6.0L
  • Mechanical Throttle

  • VATS (Vehicle Anti-Theft System) Module



    Accessories