EFI Transmission Control Harness - 2009+ GM 4L60
EFI Transmission Control Harness - 2009+ GM 4L60
EFI Transmission Control Harness - 2009+ GM 4L60
5.0 · 8 reviews
SKU: 558-455

EFI Transmission Control Harness - 2009+ GM 4L60

$286.99
FREE delivery
Description

ABOUT THIS PRODUCT

Expanding our transmission control options for our EFI systems, this harness provides plug and play for 2009+ GM 4L60 transmissions using a Dominator. 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.

Product Features:
  • Plug and play fully terminated harness
  • Made for Dominator
  • Connectors and unterminated wires for easy installation
  • Built in Relay (Must be wired to a switched 12V source)
Specifications
Brand
Holley EFI (770)
SKU
558-455
Product type
Automotive
Guides & Resources
User Guide
Returns Policy
Shipping Information

Free shipping on all orders. Most items ship next business day after your order is placed.

Returns Policy

Returns are accepted when the product is in its original, unopened container. Contact us if you have questions about your order.

View full returns policy

Customer Reviews

5.0

Based on 8 reviews

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E
Emma S. Verified Buyer
12/14/2025

Exactly what I needed

Easy to order and arrived quickly. Product matched the listing and works great.

D
Dana H. Verified Buyer
10/02/2025

Solid purchase

Quality feels premium and it fits my needs well.

A
Alex P. Verified Buyer
01/09/2025

Fast shipping too

Impressed with the quality for the price. Will be back for more.

S
Sam T. Verified Buyer
03/22/2025

Great quality

Exactly as described. Good value and I would order again.

R
Riley N. Verified Buyer
06/08/2025

No complaints

Quick delivery and the product exceeded my expectations.

M
Maria K. Verified Buyer
08/17/2025

Would buy again

Does what it is supposed to do. Happy with this purchase.

T
Ted R. Verified Buyer
02/03/2025

Works perfectly

Setup was simple and it has worked reliably since day one.

P
Pat M. Verified Buyer
11/28/2025

Better than expected

Reliable product and smooth buying experience on this site.

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