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  • For Off-Road Use Only
    Tuner Depot Tuning Credit GM Duramax L5P – TCM Tune (2017-2023)
  • For Off-Road Use Only
    Tuner Depot Tuning Credit GM Duramax L5P – TCM Tune (2017-2023)
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GM Duramax L5P – TCM Tune (2017-2023)

Sku: L5P-TCM-Tune

This product fits:

2017-2023 GM Duramax L5P 6.6L Silverado 2500HD / 3500HD
2017-2023 GM Duramax L5P 6.6L Sierra 2500HD / 3500HD
$329.99
-0%
Shipping calculated at checkout.

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

Click here to find the right tuner for your truck!
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🚨 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.

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Black Bandit Series 3 material image
T304 Stainless Steel

The Purest Stainless Steel used in Exhaust System Manufacturing

rust resistant icon

High Rust Resistance

Lasts up to 20+ years icon

Lasts Up To 20+ years

Looks better icon

Looks Better

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T409 Stainless Steel

The Standard Stainless Steel used in Exhaust System Manufacturing

rust prone icon

Low Rust Resistance

Lasts up to 20+ years icon

Lasts Up To 5-8 Years

Looks better icon

Looks Dull

Attention

A 2022 Cummins Tune Package was added to your cart. This tune is a beta tune that may cause the following:

  • Low power
  • Poor fuel mileage
  • Engine codes that may appear
  • Poor shifting characteristics

For a tested and proven tune, please view our Ram Cummins 6.7L All-in-One DPF/DEF/EGR Delete Kit w/ECM Swap (2022-2024)

Attention

You have added a product to your cart that requires the Service. This required additional service is NOT included in the price shown on TunerDepot.com. This means that you will be required to pay for the Service in addition to the product you have just added to the cart.

For off-road use only

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

Superior Transmission Control: L5P TCM Tuning Files

Discover a tailored TCM tune exclusively for 2017-2023 L5P GM Duramax Silverado & Sierra 2500/3500 6.6L pickup trucks. Experience a perfect blend of robustness and enhanced driving experience.

What's on Offer:

  • Revamped shift schedules for impeccable drivability.
  • Modified shift points to consistently stay in the engine's boost range.
  • Finely-tuned shifts for a smoother ride.
  • Optimized torque converter lock-up settings.
  • Adjusted transmission line pressure, complementing your enhanced engine performance.
  • Sturdier shifts to increase transmission lifespan.

GM Duramax L5P – TCM Tuning Upgrade Kit

The Essential Components for Tuning:

To get the most out of this TCM tune file, you will need:

Upgrading your TCM has never been easier! We've bundled everything you need in one comprehensive package. Whether you're an enthusiast or a pro, our GM Duramax L5P – TCM Tuning Upgrade Kit is tailor-made for your 2017-2023 truck. It offers unbeatable value, combining essential components and tuning prowess to unlock the true potential of your vehicle. Dive into peak performance with a single click!

    Ready to Tune?

    If you're gearing up to utilize this tune file, we've got you covered:

    Always ensure you input your OBD2 Flash Delete Tuning Interface's serial number when purchasing credits. Let Tuner Depot elevate your driving experience to new horizons!

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

    Important Product Information

    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. Unless specified differently on the product page, our parts do not include installation instructions. They 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.

    Returns & Refunds: All sales of exhaust pipes, straight pipes, and engine pipes are final and Non-Returnable and Non-Refundable.

    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

    At Tuner Depot, we understand the importance of timely delivery for your performance parts. We're 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, unforeseen circumstances beyond our control may occasionally impact shipping times.
    Factors Affecting Shipping:
    • Weather Conditions: Adverse weather conditions such as rain, snow, or sleet may affect delivery timelines. We will make every effort to minimize any delays.
    • Holiday Periods: Please note that our shipping center will be closed during holidays. We will resume shipping promptly on the next business day. Allow for potential delays during peak seasons, but rest assured, we will keep you informed every step of the way.
    • Staff Availability: Unforeseen circumstances can occasionally affect our staffing levels, possibly leading to minor delays. We are committed to swiftly resolving any issues to maintain our high standards of service.
    We genuinely appreciate your understanding and patience during any unexpected obstacles. Be assured that we will utilize every resource available to deliver your performance parts promptly.