PCM of NC 4l60e/4l70e to 4l80e Swap Harness
If you are swapping to a 4l80 in a vehicle with a factory 4 speed (either 4l60, 4l65, or 4l70) consider our 4l80 swap harness. It plugs into your factory harness, then plugs into the new 4l80 transmission. There are a few tune changes that need to be made. These changes are simple to make on your own and included