6L80e to 4LXXe Conversion Harness

SKU P-120020 6L80e to 4LXXe Conversion Harness Categories , , , ,
(1 customer review)


    • $
    • $


NOTE: Most wiring harnesses are taking 1-2 weeks to process/ship due to a high volume of orders. If you need immediate shipping please call to confirm availability. To ensure your place in line, please place an order as we ship paid orders first before posting back in stock notices. We can refund at any time.

Time to swap out your 6L80e for a 4L80e/4L70e/4L60e? Our plug and play harness makes quick work of the wiring required for the swap and includes an OEM GM Transmission Control Module with base programming already done!  Retains all of the great OEM features & allows for tuning tuning with popular 3rd party tuning suites since it is a GM module.  Cruise control, gear indicator, & factory transmission temperature gauge work with this swap!  No reprogramming of ECM or BCM required!  Tap-shift/paddle shift is not supported.  We have successfully installed this in many gen-4 6L80e & 6L90e vehicles: Cadillac CTS-V, 5th-gen Camaro, Pontiac G8s,  full-size trucks & SUVs, etc.   This harness does not work with Gen-5 LT-based vehicles.  Input speed sensor not needed for this kit, do not hook up.    Gen 4 applications with E67 & E38 PCM should all work, Gen 5 E78, E92 ECM & others not currently supported.

Also, if installing in a Camaro, check out our 2010-2015 Camaro 4L80e Conversion Trans Mount Bracket – HERE.

NOTE: Your transmission case must have provisions to run an external shift range switch.  4L80e’s come with two different selector shafts, short and long. You must use the longer shaft to be able to run our kit (they are not difficult to change). The part # is 24235194. See difference in shaft herelink.


Additional information

Weight 5 lbs
Dimensions 12 × 9 × 6 in

1 review for 6L80e to 4LXXe Conversion Harness

  1. Ken A.

    Easy installation, much easier to dial in transmission tune using HP tuners vs. an aftermarket controller.

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