GMC

We offer Duramax Allison T14/A50 and T14a/A40 TCM Repairs and Exchanges. We provide a standard 1-business day and Same-day repair turnaround upgrade option, no customer programming required, and 5-star customer service and communication. All TCMs come with a full warranty. So, place your TCM repair order or exchange service today!

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)

    GMC

    2006 - 2008 GMC Sierra Allison TCM A46 Repair

    • Sierra

    This is a repair service for a 2006 - 2008 GMC Sierra 2500/3500 Allison A46 TCM (Transmission Control Module) found in Chevrolet with 6.6L Duramax engines.  The A46 TCM that controls the Allison transmission has a high failure rate, most commonly...

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

    GMC

    2006 - 2008 GMC Topkick Allison TCM A46 Repair

    • Topkick

    This is a repair service for a 2006 - 2008 GMC Topkick Allison A46 TCM (Transmission Control Module) found in GMC with 6.6L Duramax engines.  The A46 TCM that controls the Allison transmission has a high failure rate, most commonly seen in LMM...

    $749.99
    $799.99
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