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Holley EFI 558-455 -2009+ GM 4L60E 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.
Availability: Call to check stock.
Shipping: Free Shipping* On Orders Over $99!
Pricing: $209.95
Free U.S. Continental Shipping


Built in Relay - Must be wired to a switched 12v source.
Plug and play with 2009+ GM 4L60E Transmissions

California Proposition 65

California Prop 65WARNING: Cancer & Reproductive Harm -


Requires software version 5.0 build 100 or higher and ECU firmware 5.0 build 110 or higher


  • 558-455
  • 558-455
  • 090127048092
  • Holley EFI
  • Call to check stock.
  • New


Shipping Information

  • Item Requires Shipping
  • 1.0 lbs.
  • W10.0000” x H2.0000” x L10.0000”
  • Free U.S. Continental Shipping
  • Free Shipping* On Orders Over $99!

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