Holley EFI Transmission Control Harness - 2009+ GM 4L60 558-455
Specifications:
Description:
Expanding our transmission control options for our EFI systems, this harness provides plug and play for 2009+ GM 4L60 transmissions using a Dominator, Terminator X Max or Sniper Transmission Controller. This also contains an internal turbine speed sensor, which was not on the previous models. Additionally, the valve body range selector is wired and controlled differently from the ECU.









