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ALLISON TRANSMISSION CONTROL MODULE (TCM) 2009-2015: OEM 24256861

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$3,495.00

CORE CHARGE:

$500.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITY IN STOCK
OEM NUMBER24256861
PART TYPETransmission Control Module (TCM)
BRANDTamerx Diesel Products
ENGINE MAKEAllison
ENGINE TYPE
YEAR2009-2015
PART NUMBER24256861-A50RM

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Transmission Control Module (TCM), Tamerx part number 24256861-A50RM ( OEM Part Number 24256861 ). All parts are proudly remanufactured in the U.S.A. to the highest of OEM standards, and improvements are often applied to the original design in the remanufacturing process. This part is primarily made for a Allison , production years 2009-2015, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM24256861
Additional OEM24256861, A50, T14A

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode
WEIGHT2.00 LBS

SHIPPING OPTIONS

Ship Weight : 2.00 LBS
UPS Ground, 2nd Day Air, Next Day Air

SHIPPING POLICY

Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.

The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.

Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.

Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".

If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.

As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.

What is a Core Charge?

A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.

30 Day Core Charge Hold

You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.

The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.

The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more. You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation. Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.

All fluids must be drained.

If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.

Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.


For 2009-2015 Allison transmissions, the OEM 24256861 Transmission Control Module (TCM) provides precise gear management and reliable system communication. Designed to meet OEM specifications, it ensures seamless compatibility and consistency. Manufactured with high-quality materials, this TCM is built for durability and long-term use in demanding conditions. Its direct-fit design allows for easy installation, reducing downtime and ensuring a secure connection. Ideal for commercial and heavy-duty vehicles, this component helps maintain smooth and efficient transmission operation.

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The Allison Transmission Control Module (TCM) is a critical component in ensuring the smooth and efficient operation of your vehicle's transmission system. For vehicles manufactured between 2009 and 2015, the Allison TCM (OEM 24256861) plays a vital role in managing the transmission's functions, optimizing performance, and enhancing fuel efficiency. In this blog, we will explore how this TCM improves your vehicle's overall performance and reliability.

The Role of the Transmission Control Module (TCM)

  • Optimized Gear Shifting

    • The OEM 24256861 TCM ensures precise and timely gear shifts, which enhances driving comfort and performance. This optimization helps in maintaining the engine in its most efficient RPM range.

  • Improved Fuel Efficiency

    • By managing gear shifts effectively, the TCM helps in reducing fuel consumption. This leads to better fuel economy and lower operational costs over time.

  • Enhanced Transmission Life

    •  Properly managed gear shifts and reduced transmission strain result in extended transmission life. The TCM ensures that the transmission operates within safe parameters, preventing premature wear and tear.

  • Better Vehicle Performance

    •  The TCM plays a crucial role in overall vehicle performance by ensuring smooth and efficient transmission operation. This leads to improved acceleration and responsiveness.

  • Diagnostic Capabilities

    • The TCM provides valuable diagnostic information, helping to identify and troubleshoot transmission issues quickly. This reduces downtime and maintenance costs.

Key Features of the OEM 24256861 Transmission Control Module

  • High Precision Engineering

    • Engineered to meet stringent specifications, this TCM ensures precise control over transmission functions, enhancing overall vehicle performance and efficiency.

  • Durable Construction

    • Made from high-quality materials, this TCM is designed to withstand harsh conditions, ensuring long-term durability and reliable performance.

  • Easy Installation

    • The OEM 24256861 TCM is designed for straightforward installation, minimizing downtime and ensuring your vehicle is back on the road quickly.

  • Compatibility

    •  Specifically designed for vehicles with Allison transmissions from 2009-2015, ensuring a perfect fit and seamless integration with your vehicle's system.

The Allison Transmission Control Module (OEM 24256861) is an essential component for maintaining the efficiency and reliability of your vehicle's transmission system. Its ability to optimize gear shifting, improve fuel efficiency, enhance transmission life, and provide diagnostic capabilities makes it a crucial part of your vehicle’s performance. Investing in this high-quality TCM will not only boost your vehicle’s performance but also contribute to significant cost savings over time. Ensure your vehicle operates at its peak by choosing the OEM 24256861 Transmission Control Module.

The transmission control module (TCM) is a vital component in modern vehicles, responsible for managing the transmission's shifting patterns and overall performance. When the TCM fails, it can lead to various issues such as erratic shifting, transmission slips, or even complete transmission failure. Replacing a faulty TCM is essential for maintaining your vehicle’s performance and reliability. Here’s a step-by-step guide on how to replace a transmission control module.

Steps to Replace a Transmission Control Module

Replacing a TCM involves several critical steps. Here’s a detailed guide to help you through the process:

  1. Diagnose the Problem:

    • Before replacing the TCM, ensure that it is indeed the cause of the transmission issues. Use a diagnostic tool to check for error codes related to the TCM. Confirming the problem can save you time and money.
  2. Disconnect the Battery:

    • Safety first. Disconnect the negative battery terminal to prevent any electrical shorts or shocks while working on the vehicle's electrical system.
  3. Locate the TCM:

    • The TCM is typically located under the hood, near the battery, or inside the vehicle under the dashboard. Consult your vehicle’s service manual to find the exact location.
  4. Remove the Old TCM:

    • Disconnect the wiring harness connected to the TCM. Carefully unbolt and remove the TCM from its mounting bracket. Be gentle to avoid damaging any surrounding components.
  5. Install the New TCM:

    • Place the new TCM in the same position as the old one and secure it with bolts. Connect the wiring harness to the new TCM, ensuring all connections are tight and secure.
  6. Reconnect the Battery:

    • Reconnect the negative battery terminal. This will restore power to the vehicle’s electrical systems.
  7. Program the New TCM:

    • Many modern TCMs require programming to match the specific parameters of your vehicle. Use a diagnostic tool to program the new TCM according to the manufacturer’s specifications. This step is crucial for the proper functioning of the transmission.
  8. Test Drive the Vehicle:

    • Start the engine and take the vehicle for a test drive. Monitor the transmission's performance to ensure the new TCM is functioning correctly. Check for smooth shifting and listen for any unusual noises.
  9. Scan for Error Codes:

    • After the test drive, use the diagnostic tool to scan for any error codes. If any codes appear, address them accordingly to ensure there are no lingering issues.

Benefits of Replacing a Faulty TCM

Replacing a malfunctioning TCM can offer several benefits, including:

  • Improved Shifting
    • A properly functioning TCM ensures smooth and precise shifting, enhancing the driving experience.
  • Increased Fuel Efficiency
    • Efficient transmission operation can lead to better fuel economy.
  • Extended Transmission Life
    • Replacing a faulty TCM can prevent further damage to the transmission, potentially extending its lifespan.
  • Enhanced Performance
    • A new TCM can restore the vehicle’s overall performance, ensuring reliable and responsive driving.

Replacing a transmission control module is a critical task that requires careful attention to detail. By following the steps outlined above, you can ensure a successful TCM replacement and restore your vehicle’s transmission performance. For high-quality transmission control modules and expert advice on maintaining your vehicle, visit our website and explore our extensive range of products designed to keep your vehicle running smoothly.

Signs of a malfunctioning TCM include erratic or harsh shifting, transmission slipping, illumination of the check engine light, failure to shift into the correct gear, and diagnostic trouble codes related to transmission communication errors. ​

The TCM should be inspected during routine maintenance intervals, especially if transmission issues arise. Replacement is typically necessary when diagnostic tests confirm TCM failure or when experiencing persistent transmission problems.

Verify electrical connections, inspect wiring harnesses for damage, and check for diagnostic trouble codes (DTCs) using a scan tool.

Intermittent shifting problems may be due to internal TCM failure, corroded connectors, or software-related glitches.

Allison Transmission Control Module (TCM)s