Skip to product information
1 of 2

GM Duramax L5P – ECM E41 Upgrade & Unlock Kit (2017-2023)

Tuner
Sku: DT-HP-E41-UK

This product fits:

2017-2023 Chevy Silverado and GMC Sierra
2500/3500 6.6L Duramax trucks
Regular price
$439.99 USD
Regular price
Sale price
$439.99 USD
-0%
Shipping calculated at checkout.
Only 18 items in stock! Out of stock!

🚨 ATTENTION 🚨

Notification for the incorrect product/variant will be listed here.

Click here to find the right tuner for your truck!
X

🚨 REMEMBER 🚨

Within the device vehicle info section, look for the value with the text containing "14C204":
HC3A-14C204-ABH

Once you receive the device, please contact us with your serial number, VIN, and ECU strategy so we can create the custom tunes and send it to you for tuning your vehicle.

OK

🚨 ATTENTION 🚨

Please agree to our Terms of Service for the Sprinter tune:

Guaranteed safe checkout

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa
Vendor: Tuner Depot

DESCRIPTION

For off-road use only

Image is for demonstration purposes only. Actual device may vary in color and branding

E41 L5P Upgrade & Unlock Kit

L5P ECM unlock kit allows you to conveniently upgrade your E41 ECM for 2017-2023 Chevy Silverado and GMC Sierra 2500/3500 6.6L Duramax trucks without the need to remove it from the vehicle.

This upgrade can be completed in 20 minutes or less and enables essential functions like reading, writing, and tuning via a specialized computer software using an OBDii Flash Delete Tuning Interface. This kit is currently available for purchase in the US and Canada only.

This streamlined process makes it easier for professionals and DIY enthusiasts to enhance their trucks' performance without the hassle of removing the ECM. 

Upgrade Your E41 ECM Right in the Garage/Shop

The new E41 ECM Upgrade Kit provides DIY enthusiasts and tuners an easy way to upgrade the ECM on 2017-2023 Chevy Silverado/GMC Sierra 6.6L L5P Duramax trucks. You don’t need to remove the ECM, which eliminates the risk of damaging tabs during installation.

Additionally, no complicated reprogramming or relearns are required:

  • No IMMO relearn
  • No crank relearn
  • No “Replace ECM” function

The upgrade process takes just 20 minutes with the kit, OBDii Flash Delete Tuning Interface, and specialized software. Once complete, you’ll have access to full diagnostics, scanning, data logging, and editing capabilities. Write times are incredibly fast — only 6 minutes!

This streamlined upgrade ensures both speed and convenience for a hassle-free experience.

INSTRUCTIONS CAN BE FOUND HERE

PLEASE NOTE!

  • Off-Road Use Only: The products sold on this website are intended for off-road use only, and may not be legal for use on public highways where pollution control laws apply.
  • Check Local Laws: Before purchasing and installing any of these parts, please check your local and state laws to confirm whether the modifications are legal in your area.
  • Professional Installation Recommended: These kits and parts are strongly recommended to be installed by professional mechanics only. Improper installation may lead to performance issues or damage to your vehicle. Please note that, unless specified differently on the product page, our parts do not include installation instructions. Our components are intended for individuals with a proficient understanding of mechanical systems and procedures. Like many aftermarket parts compatible with a variety of vehicles, minor adjustments or modifications may be necessary during the installation process. We cannot accept returns or offer refunds on the basis of an inability to complete the installation due to the absence of instructions.
  • Warranty: The use of these parts will void the warranty of your vehicle. Please confirm with your vehicle manufacturer before purchase and installation.
  • No Liability: Tuner Depot is not responsible for any damage or issues that may arise from the use of these parts.
  • Product Images: Product images are for illustrative purposes only and may differ from the actual product due to manufacturer design changes or improvements.
  • No Performance Guarantees: While these parts are designed to enhance the performance of your vehicle, no guarantees are made regarding the specific performance gains that will be achieved.

Shipping Policy

At Tuner Depot, we understand the importance of timely delivery when it comes to your performance parts. We are committed to ensuring a seamless shipping experience, striving to dispatch your orders with utmost efficiency and speed.

Our Shipping Policy: Our aim is to dispatch all orders within two business days, providing you with a quick and efficient processing time. However, please bear in mind that unforeseen circumstances beyond our control may occasionally impact shipping times.

Factors Affecting Shipping:

Weather Conditions: While we pride ourselves on our fast and efficient order processing, adverse weather conditions such as rain, snow, or sleet may affect delivery timelines. We assure you that we will make every effort to overcome such challenges and minimize any delays.

Holiday Periods: Even our dedicated team needs a well-deserved break during holidays. Please note that our shipping center will be closed on such occasions. Rest assured, we will resume shipping promptly on the next business day. During peak holiday seasons, please allow for potential delays, but be assured that we will keep you informed every step of the way and work diligently to deliver your order as swiftly as possible.

Staff Availability: While we have an exceptional team, we recognize that unforeseen circumstances can occasionally affect our staffing levels. In such cases, we may experience minor delays. However, we want to assure you that we are committed to swiftly resolving any staffing issues and maintaining our high standards of service.

We genuinely appreciate your understanding and patience during any unexpected obstacles we may encounter along the way. Be assured that we will utilize every resource available to deliver your performance parts to you promptly.

Thank you for choosing Tuner Depot, where our passion fuels our commitment to outstanding customer service.

Happy tuning!