Transmission Control Module (TCM) For Chevrolet

Code: GM.1060.24256861.10.20

Repair Service

Shipping:$79.00 Express
$39.00 Ground
Service Type:Repair Service
Turnaround Time:2-3 Days
OEM Part Number:24256861 T14 A50
XeMODeX Part Number:GM.1060.24256861.10.20
Reload Required?No. Plug & Play
Warranty:Lifetime Limited Warranty

XeMODeX Price:  $949.00

In Stock



2009-2015 ChevroletSilverado 2500 HD with 6.6L V8 Diesel
2009-2015 ChevroletSilverado 3500 HD with 6.6L V8 Diesel

What you need to know (please read before ordering)

What you need to know (please read before ordering)

Our GM TCM Repair is 99% Successful
We can recover 99% of all failed Duramax Transmission Control Modules. No matter if the failure is hardware or software related.

This is a Repair Service of your existing module. You will need to remove and send your module to us for repair using the shipping labels provided to you.

The order will be processed during our regular business hours (Mon-Fri 8:30 – 5:00 EST). After processing your order, we will email shipping labels and shipping instructions. If you do not see shipping labels within 1 hour of submitting your order (during business hours) please first check your junk/spam folders. If you still do not see the labels, please contact us at 1-888-712-2525

Please Note:This is a highly complex repair most remanufacturers don’t have the capabilities or expertise to handle. Combined with the fact the part is on backorder from the dealer with no ETA, this has created a very high demand for this service.

Due to this demand, we are experiencing a backlog which is creating further delays. Our team is working hard to get as many of these modules repaired as possible, but please be patient.

Furthermore, there are some TCMs which have issues with the flash data. There’s no way of knowing if this is the case before testing. While there’s no additional cost to resolve these issues, it will take longer to resolve.


Plug & Play: The software and settings will not be modified, making this module plug and play. No software reload, coding or calibration is required after installation.

Completely Reworked PCB: All internal circuit boards are tested at the component level. Any known prone-to-failure parts that are close to the maximum tolerance are automatically replaced.

Quality Tested: All TCMs undergo rigorous tests on our specialized custom-built CAN-bus driven test bed. All functions, DTCs, and software are checked and verified for proper operation.

Lifetime Limited Warranty: This module comes with our Lifetime Limited Warranty. Please see here for more information.

Reference Numbers

Reference Numbers

24256861 | 24257038 | 24257092 | 25978353 | 29545535 | 24256670 | 29544772 | 24256864 | 19431597 | 24266710 | 15117030 | 24043956 | 24256864 | 25798264 | 25982143 | 19431596

Common Failure Symptoms

Common Failure Symptoms

Our GM TCM Repair is 99% Successful

We can recover 99% of all failed Duramax Transmission Control Modules. No matter if the failure is hardware or software related.

•Lost communication with the Transmission Control Module.
•Engine will not crank, when the TCM communication is lost.
•“PRNDL” Gear position indicator is not displayed on the cluster.
•“Service Stabilitrak” message is displayed.
•“Service Traction Control” message is displayed.
•“Service Trailer Brake” message is displayed.
•Check engine light is on.
•Transmission drops out when TCM module gets warm.
•Transmission goes to neutral while driving.
•Erratic shifting, transmission won’t come out of first gear.
•Engine power loss.
•Transmission stuck in the “Limp Mode” stuck in 3rd gear.
•Transmission shift through gears while in park.
•Code P0700 – “MIL Requested by the TCM.
•Code U0101 – “Lost Communication with the TCM.
•Code P2544 – “Torque Management Request Input Signal A”
•Code C0561 – “Incorrect Data Received by the EBCM”

TCM Flash Programming Failures

Flash memory corruption amounts to about 40% of Duramax Transmission Control Modules. As a result, the TCM will lose communication with the rest of the vehicle’s network. Such a failure means that the software in your TCM has crashed and can not be recovered. In these cases, we will replace the flash chip and reprogram it with software that matches your Vehicle Identification Number (VIN). This procedure is performed using the original GM TDS online service. Once this is completed, your TCM will be updated with the latest software available from GM. TCM TDS Re-programming is done at no additional cost to you. Re-programmed units are plug and play, as long as they are installed in the original vehicle.

This also means that if you had your TCM tuned by the outside company, your tune will be lost and the TCM will be restored to the factory software level. You can always opt to re-tune your module again after it is installed in the vehicle. XeMODeX is not responsible for any tuning costs. We will only program the TCM with the original factory software.

How This Service Works

How This Service Works

Step 1: Purchase our service online or over the phone.
Step 2:
After processing your order, we will email you pre-paid shipping labels.
Step 3: Send us your old defective unit by dropping off the package to any UPS location or call UPS to schedule a pick- up.
Step 4: We will inspect and repair your old module.
Step 5: We will send you back the repaired module the same day (unless otherwise stated).
Step 6: You install the unit back into your vehicle.

For more detailed instructions, please see here.