GM

If your Duramax Allison TCM is failing, you may notice issues such as not being able to shift gears, lost communication with the TCM, or rough shifting. We can help! Our repairs address both failed and commonly failing components to improve reliability and extend your TCM's life at a fraction of the cost.

With over 37k 5-star reviews, we are a trusted and reliable provider of fast and affordable repairs.

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  • On Sale!
    Allision TCM (Transmission Control Module) Repair

    GM

    LML/LMM Allison TCM Repair

    • Silverado
    • Sierra

    This is a repair service for an Allison TCM (Transmission Control Module) found in Chevrolet and GMC trucks with 6.6L Duramax engines.  The T14 and A50 TCM that controls the Allison 1000 transmission has a high failure rate most...

    $749.99
    $799.99
  • On Sale!
    Allision TCM (Transmission Control Module) Exchange

    GM

    LML/LMM Allison TCM Exchange

    • Silverado
    • Sierra

    This is a ready-to-ship, completely rebuilt, and pre-programmed replacement LML/LMM Allison TCM for your 2009 - 2015 Chevrolet and GMC trucks with 6.6L Duramax engines. Each TCM is programmed for your vehicle's specific VIN. Plug-and-Play no...

    $849.99
    $899.99
  • On Sale!
    A50/T14 TCM (Transmission Control Module) Repair

    GM

    A50/T14 TCM Repair

    • Silverado
    • Sierra

    This A50 and T14 Allison TCM (Transmission Control Module) repair service is for Chevrolet and GMC trucks with 6.6L  Duramax engines. This TCM controls the Allison 1000 transmission and has a high failure rate, most commonly seen in LMM and LML...

    $749.99
    $799.99
  • On Sale!
    A50/T14 TCM (Transmission Control Module) Exchange

    GM

    A50/T14 TCM Exchange

    • Silverado
    • Sierra

    This is a ready-to-ship, completely rebuilt, and pre-programmed replacement A50/T14 Allison TCM for your 2009 - 2015 Chevrolet and GMC trucks with 6.6L Duramax engines. Each TCM is programmed for your vehicle's specific VIN. Plug-and-Play no...

    $849.99
    $899.99
  • On Sale!
    Part 24256861 TCM Repair

    GM

    24256861 TCM Repair

    • Silverado
    • Sierra

    This is a repair service for an Allison TCM (Transmission Control Module), part number 24256861, found in Chevrolet and GMC trucks with 6.6L Duramax engines.  The T14 and A50 TCM that controls the Allison 1000 transmission has a...

    $749.99
    $799.99
  • On Sale!
    24266710 Allision TCM (Transmission Control Module) Repair

    GM

    24266710 TCM Repair

    • Silverado
    • Sierra

    This is a repair service for an Allison TCM (Transmission Control Module), part number 24266710, found in Chevrolet and GMC trucks with 6.6L Duramax engines.  The T14 and A50 TCM that controls the Allison 1000 transmission has a...

    $749.99
    $799.99
  • On Sale!
    Allison A51 TCM (Transmission Control Module)

    GM

    Allison A51 TCM Repair

    This A51 Allison TCM (Transmission Control Module) repair service is for medium and heavy duty vehicles. We have thorough in-house testing and can address wire bonding and other root causes of the TCM failure to ensure that it is rebuilt to withstand the...

    $799.99
    $849.99

Transmission Control Module (TCM) Repairs

With our 1-business-day turnaround, upgraded to better-than-new components, and a 1-year no-hassle warranty, our Transmission Control Module (TCM) repair services offer a cost-effective alternative to dealership replacements. Every repair is backed by our 5-Star customer service, saving you time and money while getting your vehicle back on the road.

Reasons to Choose Circuit Board Medics

  • Fast turnaround: Industry-leading repair speed!
  • No-Hassle warranty: Confident repairs deserve confident guarantees.
  • World-class support: Commitment, quality, and care that set us apart.
  • Upgraded components: We use high-quality replacement components, OE spec or better.
  • Plug-and-Play Solution: Many of our repair products require no programming.
  • USA remanufacturing and repair: Located in Greenville, SC.

Repair your TCM for a fraction of the cost and get back on the road fast! Shop our repairs or call us at 800-547-2049.

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