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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.
This product cannot be shipped to California.
|Manufacturer Part #
|1.70 lbs (0.8 kg)
|2.2" (5.6 cm)
|10.6" (26.9 cm)
|6.6" (16.8 cm)
|No (see note below)
Size and weight of different configurations may vary. For exact product weight and dimensions, please refer to the manufacturer's spec sheets or sizing sheets included in the description above or contact us.
CARB and EPA Emissions Statement: Based on the information provided to us by manufacturers and our own knowledge, we do the best we can to determine the CARB and emissions legality of the parts we sell. Please do your own research with the manufacturer to ensure that this part is legal for use in your state on the car you will be installing it on. If you believe that this part is incorrectly listed, please let us know at firstname.lastname@example.org. Parts which are not legal for use on emissions controlled vehicles in California and states which follow California CARB rules will require an affidavit to be signed by the customer certifying the part's use on a vehicle which is not emissions controlled.