GM Duramax L5P – Unlocked TCM (2017-2023)


GM Duramax L5P – Unlocked TCM (2017-2023)


Off-Road Usage Compliance:

The merchandise available on this site is strictly for off-road applications. Adherence to public highway pollution control regulations is mandatory, and many of our products may not conform to such laws.

Local Legislation Awareness:

Prior to purchase and installation, we urge our customers to verify the compatibility of these modifications with local and state regulations. It is essential to ensure that your vehicle remains compliant with area-specific legal standards.

Installation by Professionals Advised:

We strongly advocate for the installation of our kits and components to be conducted by qualified mechanics. Incorrect installation could result in suboptimal performance or potential damage to your vehicle. It should be noted that, barring exceptions listed on specific product pages, our parts are provided without installation guides. Our products are intended for individuals who possess a comprehensive understanding of mechanical systems. Given the universal nature of many aftermarket parts, slight modifications or fine-tuning might be required during installation. We regret that we are unable to process returns or offer refunds due to challenges arising from the absence of installation instructions.

Warranty Notice:

Utilization of these components may invalidate your vehicle’s manufacturer warranty. We recommend consulting with your vehicle’s manufacturer prior to purchase and installation for clarity.

Limitation of Liability: holds no responsibility for any damages or complications resulting from the use of our products. The responsibility for safe and correct usage of our parts lies solely with the user.

Product Representation:

Images displayed on our website are illustrative and may not fully represent the actual product, as manufacturers may implement design changes or improvements.

Performance Outcomes:

While our parts are engineered to boost your vehicle’s performance, specific performance outcomes cannot be guaranteed. The actual performance enhancements may vary depending on several factors.

Welcome to

At, we recognize the critical importance of prompt delivery for your performance parts. Our dedication lies in providing a seamless shipping experience, ensuring that your orders are dispatched with the highest efficiency and speed.

Our Commitment to Fast Shipping:

Our goal is to dispatch all orders within two business days, ensuring rapid and efficient processing. We understand that time is of the essence in receiving your performance parts. However, we also acknowledge that on rare occasions, external factors beyond our control may influence shipping times.

Factors Influencing Shipping Timelines:

  • Weather Conditions: At, we take pride in our swift order processing. However, severe weather conditions such as rain, snow, or sleet could impact delivery times. Rest assured, we are dedicated to overcoming these challenges, striving to minimize any potential delays.
  • Holiday Periods: Our devoted team deserves a break during the holidays, and thus, our shipping center will be closed on these occasions. We assure you that shipping will resume on the next business day. During peak holiday seasons, minor delays might occur, but we commit to keeping you well-informed and working tirelessly to expedite your order.
  • Staff Availability: Our team is our strength, but unforeseen situations can sometimes impact staffing levels. Should this lead to any delays, know that we are actively working to resolve these promptly and maintain our exceptional service standards.

We deeply appreciate your understanding and patience should we face any unforeseen challenges. Be assured, we are fully committed to utilizing all our resources to ensure the prompt delivery of your performance parts.

Choose for Unmatched Service:

Your choice in is a choice for unparalleled customer service driven by our passion. We are here to ensure that your experience with us is as efficient and satisfying as possible.

Thank you for trusting, where our dedication to excellence is fueled by our passion for performance.

Order Cancellation Policy:

Please note that once an order is placed, it is final and cannot be canceled. At, we utilize a network of third-party fulfillment centers, distribution hubs, and manufacturers. Due to the complexity and speed of our logistics, coordinating a cancellation post-order placement is not feasible. We appreciate your understanding and encourage careful consideration before placing your order.

Flexible Return Policy:

We understand that sometimes a product may not be exactly what you needed. For most items, we gladly accept returns within 30 days of receipt. To be eligible for a return, items must be in brand new, resalable condition. Please be aware that customers are responsible for covering the


For off-road use only

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

Unlock Superior Performance: GM Unlocked T87A & T93 TCMs

Enter a new realm of transmission performance with our range of New Unlocked T87A & T93 TCMs, tailored exclusively for your 2017-2023 L5P GM vehicle. Designed specifically for 10-Speed and 8-Speed transmissions, these TCMs stand as a testament to peak automotive performance and customization.

Make Your Choice:

Truck Year:

Select the model year of your truck to ensure compatibility. Options available: 2017-2019 and 2020-2023

Your Direct Link to Enhanced Driving:

Our new GM T87A TCMs come unlocked and are primed for immediate tuning. Once you install your new TCM, it seamlessly integrates with your MPVI / MPVI2 and VCM Suite, offering you unparalleled control and optimization options.

Purchase & Installation Guide:

  • Identify your Serv# on the top of your TCM.
  • Select the corresponding Serv# from the available options.
  • Provide your VIN during the purchase process.
  • Upon receipt, strictly adhere to the Instructions for optimal performance.

Understanding the TCM Variants for L5P GM Duramax Pickup Trucks:

For owners of L5P GM Duramax Pickup Trucks, it’s crucial to comprehend the distinct TCM variants available. Based on your model year, you must select the apt variant to guarantee top-tier performance and compatibility. The following table elucidates the differences:

TCM Variant Years Supported Key Features
T87A TCM 2017-2019 Optimized for both 8 and 10-Speed transmissions. Comes unlocked and tuning-ready.
T93 TCM 2019-2023 The modern successor to the T87A; Unlocked with a primary focus on diesel vehicles. Special programming options available for gasoline vehicles.



    Your Cart
    Your cart is emptyReturn to Shop