GM Duramax L5P – Unlocked E41 ECM (2017-2023)



Unlock the Power: GM Duramax L5P Unlocked E41 ECM

Enhance your Chevrolet Silverado or GMC Sierra 2500/3500 6.6L Duramax with Tuner Depot’s L5P Modified ECM Purchase. Experience optimized tuning, without the hurdles of traditional modifications.

Truck Year:

Select the model year of your truck to ensure compatibility. Options available: 2017, 2018-2021, and 2022-2023.

Benefits of the L5P Modified ECM:

  • Receive a pre-modified, unlocked ECM tailored for your vehicle.
  • Retain your original ECM, ensuring it remains untouched.
  • No need to ship out your original ECM.
  • After installation, remember to perform an Immobilizer Relearn and a Crank Relearn. An SPS subscription or GM dealer tool is necessary for the Immo Relearn.