Holley EFI - 558-455
2009+ GM 4L60E Transmission Control Harness
Transmission Control Harness;
Expanding on our Transmission Control options from Holley EFI. This new harness 558-455 from Holley EFI provides plug and play transmission control for the 2009+ GM 4L60 when used with a Dominator ECU. The 2009+ GM 4L60E contains an internal turbine speed sensor, which was not on the previous model year transmissions. Additionally, the valve body range selector is wired and controlled differently from the ECU.
- Built In Relay - Must Be Wired To A Switched 12V Source
- Plug And Play With 2009+ GM 4L60E Transmissions