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EZ Lynk T87A Transmission Tune L5P for 2017–2019 Duramax. Stronger shifts, better control, and improved drivability with GDP calibration.
get your L5P with EZ Lynk T93 Transmission Tune File. Built for 2020–2023 Duramax 6.6L TCM unlock. Smoother shifts, towing confidence, better drivability.
DIESELR EZ Lynk Transmission Tune File T87A (2017–2019 L5P Duramax) delivers faster shifts, less gear hunting, and stronger torque for every drive.