How to Fix a T14a/A40 Allison TCM for 2006-2008 Chevy + GMC Duramax Trucks

How to Fix a T14a/A40 Allison TCM for 2006-2008 Chevy + GMC Duramax Trucks

In 2006-2008 Chevy and GMC Duramax trucks, the TCM is a common failure point, with a failed module resulting in problems such as codes U0101, U0100, P2669, and P0700. In addition, you may be unable to shift gears or the vehicle may be stuck in limp mode.

We offer a comprehensive rebuild service for these TCMs that will save you time and money while giving you peace of mind. If you’re in need of a remanufactured TCM, you can visit us here:

https://circuitboardmedics.com/search-results/?q=a40

This rebuild service applies to all 2006-2008 Chevrolet and GMC trucks with the 6.6L Duramax and Allison 1000 transmission.

If you have any questions or need help troubleshooting your vehicle, you can visit us at CircuitBoardMedics.com or give us a call at (800) 547-2049.

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