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GM Duramax L5P – Tuning Credits (2017-2023)

Tuning Credit
Sku: DT-HP-Cred
Vehicle Fitment:
2017-2023 L5P GM Duramax
Chevrolet Silverado / GMC Sierra 2500/3500 6.6L
Regular price
$52.25 USD
Regular price
Sale price
$52.25 USD
Shipping calculated at checkout.


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

Click here to find the right tuner for your truck!


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

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.



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

Tuning Details

* Can be submitted via email after purchase as well.

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Vendor: Tuner Depot


For off-road use only

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

Optimized Performance: Tuning Credits for L5P GM Duramax (2017-2023)

Elevate your vehicle's potential with precise calibration! With Tuner Depot's Tuning Credits, maximize the performance of your L5P GM Duramax.

Unlock the Power:

Each tuning credit you purchase from Tuner Depot plays a pivotal role in fine-tuning your vehicle's various modules, ensuring optimal performance tailored to your driving preference. Embrace a new horizon of diesel power!

How It Works:

  • Tuning Credits function as the currency, allowing you to license various vehicle modules.
  • Each module license lets you meticulously calibrate that part for peak performance.
  • For 6.6L L5P GM Duramax, ECM/PCM tuning demands 8 credits, while TCM tuning needs an extra 4 credits.
  • Licensing ties to the vehicle's VIN, PCM OS, and PCM Serial Number, ensuring persistent and customized tuning.
  • After securing the OBDii Flash Delete Tuning Interface, you can read, adjust, and store files without any extra credit expenditure. Licenses are required only when rewriting a new file onto the vehicle.

Important Note:

This offering is for a digital commodity. No physical products are shipped. Adjust the QTY to your credit requirement and, crucially, detail your serial number in the notes section. Remember, numbers must align, and refunds for credits are not permissible under any circumstance.

Ordering With the OBDii Flash Delete Tuning Interface:

If paired with our flagship OBDii Flash Delete Tuning Interface, we'll directly allocate the credits to the device. Should you wish otherwise, kindly contact us before placing your order.
OBDii Flash Delete Tuning Interface can be purchased here.

Ordering Standalone Credits:

For solo credit orders, please input the necessary data in the provided "Tuning Details Form" or, upon cart addition, click "view cart" and mention your OBDii Flash Delete Tuning Interface serial number in the "Order notes" section.

Note: This is a final sale product and cannot be returned. If you are unsure if this will work for you, reach out to us before purchasing.  If you are purchasing credits without also purchasing an MPVI3 at the same time, please email us your MPVI serial number after you purchase the credits to cut down on delays in getting the credits transferred to your device. 

*Please review the Terms & Conditions, as well as our Shipping Policy below.*


  • 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!