Haltech Nexus Ti4L Transmission Interface Kit for GM 4L Series Auto Transmissions. 

Haltech Ti4L Transmission Controller – Seamless 4L Series Auto Transmission Control

Take full control of your GM 4L series automatic transmission with the Haltech Ti4L. Designed as a plug-in expansion module for the Nexus ECU and VCU product lines, the Ti4L provides easy and efficient automatic transmission management through Haltech's powerful NSP software. Rebel LS users can enjoy an even faster setup using the simplified Haltech Connect App wizard.

The Ti4L offers more than just simple configuration—it features advanced closed-loop line pressure control with long-term learning. That means smoother, smarter shifting that improves the more you drive.

Compatible Transmissions:

• 4L60E, 4L65E, 4L70E (Non-4x4 models from 2006–2008 only; later models use different pinouts)

• 4L80E, 4L85E (Non-4x4 models from 1994 onwards; earlier 1991–1993 models require a different connector)

Key Features:

• Plug & Play with Nexus Rebel LS terminated harness

• Effortless setup via NSP software or Haltech Connect App

• Smart adaptive shifting through closed-loop control

• Designed specifically for GM 4L automatic transmissions

• Fully integrated with Haltech Nexus ECUs and VCUs
  

Upgrade your transmission control with the Ti4L for improved drivability, reliability, and performance.

What's Included: 

• 1 x Nexus Ti4L - Cased Device Nexus Ti4L Transmission Interface
• 1 x HT-187000 Nexus Series Transmission Harness - Suits 4Lx0E
• 1 x 500 psi Pressure Sensor
• 1 x -4AN Male to 1/8NPT Male 90Deg fitting Black
• 1 x 1/8npt Female to -4AN Male adapter Black
• 1 x 10mm Aluminium Spacer Suit M8 Bolt
• 1 x Hose Assembly -4AN Female to -4AN Female Black
• 1 x Insulated P Clip 15mm ID / M8
• 1 x M8 Socket Head Cap Screw SS304 M8 x 30mm
• 1 x Quick Start Guide

Info: 

Brand: Haltech 
Model: Nexus Ti4L 
Suitable for: GM 4L60E / 4L65E / 4L70E / 4L80E / 4L85E Automatic Transmissions 
Warranty: 12 Months 

Note:

The Nexus Ti4L is only compatible with the Nexus Series ECUs & VCUs including the Rebel LS. Does not suit Elite, Platinum or Legacy ECUs.

Resources:

• Quickstart Guide