GM Diesel E41 ECM/PCM Unlocking Service for HP Tuners
Unlock the full tuning potential of your GM Duramax with our upcoming E41 ECM/PCM Unlocking Service. This service will allow you to use HP Tuners to read, write, and calibrate your E41-equipped diesel vehicle — safely and effectively.
What We’ll Offer
Many late-model GM diesel trucks are equipped with the E41 ECM, which comes factory-locked and inaccessible to tuning software like HP Tuners. Our specialized unlocking service will provide a secure and reliable way to unlock these modules for tuning access.
Supported platforms will include:
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2017+ Silverado and Sierra 2500HD/3500HD with L5P Duramax
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2020+ GM HD trucks with newer E41 variants
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Other GM diesel applications using the E41 ECM
If you’re unsure about compatibility, feel free to reach out before sending in your module.
How It Will Work
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Remove your E41 ECM from the vehicle.
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Ship it to us using your preferred carrier.
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Using a trusted bench solution (based on Avtokomander tooling), we unlock the ECM securely without disturbing its contents.
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Your ECM will be returned ready for HP Tuners access.
Turnaround time: Most modules are unlocked and shipped back within 1–2 business days of arrival.
Why Choose Our E41 Unlocking Service?
✅ Fully HP Tuners compatible
✅ Safe, non-destructive unlock process
✅ Fast turnaround and competitive pricing
✅ Run by real automotive professionals
✅ Ideal for shops and tuners alike
Pricing
Unlock Service: $375 + Return Shipping
What to Include When You Ship
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Your E41 ECM (must be in working condition)
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A printed copy of our Unlock Service Request Form
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Your return shipping info and contact details
Ship To:
Spartan Autoworx, LLC
198 OAK HALL ROAD
JONESBURG, MO 63351
Note: You must supply your own tune file or work with a professional tuner. We do not provide tuning, logging, or any calibration changes.