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Custom Fit: With non-terminated ends
6L Duramax LML
hitting the track
The X4 tuner
It’s built specifically for the 2017–2019 L5P Duramax equipped with the T87A module
GDP EZ Lynk Transmission Tune File T93 (2020-2023 6.6L L5P Duramax) c_programmers Custom Fit: With non-terminated ends**MUST HAVE UNLOCKED TCM** If youre running a tuned L5P but still stuck with stock TCM mapping, you're leaving serious performance on the table. The GDP EZ Lynk T93 Transmission Tune File is the missing piece. Its built to unlock the full potential of your transmission by improving shift timing, torque management, and drivabilityno more sluggish shifts or gear hunting. This is not your average trans tune. Its built specifically for the 20202023 L5P