HP tuners CORE ECU TRANSMISSION HARNESS (GM 4L60E & 4L80E)

Main CORE ECU Wiring Harnesses
HP Tuners is thrilled to offer CORE ECU main harnesses covering multiple engines. Designed in-house, our engineers focused on routing, shielding, and layouts that will work for a variety of applications.

GM 4L60E / 4L80E Transmission Harness
This harness provides a single harness for GM 4L60E and 4L80E Transmissions. No wiring changes or pin relocation required. Easily upgrade to a four-speed automatic transmission with this plug & play solution.