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Drivetrain› Automatic Transmissions and Components

Holley

Terminator X-Max GM 6L80 6L8/90 Trans Controller

$661.95 $626.47 Save $35.48

SKU: H00E 558-499

In Stock
In Stock
Ships by Jun 8
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Holley 558-499 Terminator X Max GM 6L80/90 Transmission Kit is for use with Terminator X MAX ECU's, enabling control of 2007+ GM 6L80E and 6L90E transmissions. It communicates via CAN with the internal TCM and utilizes a supplied Holley EFI OBDII Transmission Tuning Handheld for adjustments to shift points, tire size, and gear ratio. Terminator X V3 software provides advanced torque management capabilities.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandHolley
Part NumberH00E 558-499
Weight2.15 lb

Videos

Holley EFI 6L80/6L90E Transmission Controller for Terminator X MAX!

Holley EFI 6L80/6L90E Transmission Controller for Terminator X MAX!
6L80/90 Holley and TCM2650 Integration Q&A

6L80/90 Holley and TCM2650 Integration Q&A
Terminator X Full Install and Overview

Terminator X Full Install and Overview
LS 5.3 Swap, Holley Terminator X Max installation on 1981 El-Camino with 4L60E transmission.

LS 5.3 Swap, Holley Terminator X Max installation on 1981 El-Camino with 4L60E transmission.
HOLLEY Terminator X Max Install and setup LS

HOLLEY Terminator X Max Install and setup LS

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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