2017-2023 Duramax EZ-Lynk Allison TCM Tune File (200-01401)

Unleash the complete capability of your L5P by upgrading your stock TCM mapping with the GDP EZ-Lynk T87A & T93 Transmission Tune File. Designed for 2017-2023 Duramax models with the T87A (2017-2019 6-Speed) or T93 (2020+ 10-Speed) module, this tune enhances shift timing, torque management, and drivability, resulting in improved performance and a smoother driving experience. No more sluggish shifts or gear hunting - this is not your average trans tune, it's custom-built to work with your existing GDP engine tuning. Whether you're loaded up or cruising empty, get ready for a whole new level of power and control.

Note: Your TCM must already be unlocked. EZ-Lynk cannot unlock the TCM. If your TCM isn't unlocked, you can either purchase an Unlocked T87A TCM (17-19 6-speed) or Unlocked T93 TCM (2020+ 10-speed) or unlock it yourself with the Commander Programmer.

Part Number: 200-01401

• Matched to your GDP engine tuning for seamless performance
• Faster, crisper shifts under load and at WOT
• Reduced gear hunting and improved towing manners
• Unlocks true torque potential of your L5P

• You must have an unlocked TCM - The EZ-Lynk cannot unlock the TCM 
  
• In addition to the unlocked TCM, you must perform the TCM replacement procedure with an HP Tuner Dongle in the VCM scanner.
• TCM can be unlocked with a Commander Programmer or (depending on your year) you will need an Unlocked T87A TCM (2017-2019) or Unlocked T93 TCM (2020+).

Installation Instructions

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