SKU: 39390

GMC C6500 2007-2009 Allison A50 T14 Duramax GM (TCM) Transmission Control Module Repair

This is a Repair and Return Service for your existing GMC C6500 2007-2009 Allison A50 T14 Duramax GM (TCM) Transmission Control Module Repair. Don’t buy a new or used replacement part, send your original part to UpFix for repair and save $100s! The order process is fast and easy. This service requires that you remove the part from your vehicle and send it to UpFix for repair. Every unit is repaired by IPC-certified techs and tested before shipping. Best of all, since it’s your original part, you know it’s configured correctly for your vehicle. UpFixing your existing part eliminates the need to program a replacement part. UpFix is your Plug N Play solution.
  • Estimated Repair Time is 2-4 business days.
  • Real-Time Repair Tracking
  • Our service is 100% guaranteed or your money back. Order today and save!
  • No additional programming will be required after the repair. Your TCM will be plug-n-play when re-installed back into your vehicle.
  • International Shipping Available
  • Free shipping available at online checkout!
NOTE:
✅ Better Than New: No programming required - No extra costs or delays for coding.
💪 Fully Sealed and Tested: 100% Weatherproof and fully tested - guaranteed.
🔧 Fast Turnaround: We get your work truck working fast! Only 2-3 day repair time.


Please refer to this troubleshooting guide if youre uncertain if the TCM is at fault:

Troubleshooting Guide For Allison TCMs

NOTE: We flash and program to the lastest Manufacturer settings based on your VIN. Any custom TCM software tunes must be backed up. We are not responsible for any lost TCM setting profiles.

GM engine codes that have this type of TCM: LBZ, LMM, LML, LLY, LGH  
$499.99
$799.99
MSRP:
$3,999.00
Save: 87%
$499.99
$799.99
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Description

Description

This is a repair and return service for GMC C6500 2007-2009 Allison A50 T14 Duramax GM (TCM) Transmission Control Module Repair, years 2007 2008 2009 . When you receive your rebuilt part back from us it will be plug-n-play and not need any additional programming.

Once we receive your part, our trained and IPC certified technicians will run tests to identify the source of the problem. We will rebuild your part, replacing not only the failed components, but all components that are usually known to fail or go bad in this part. There is no programming required after we rebuild your original part. We want to make your experience as effortless as possible. All you have to do is send your part to us. Then after receiving the part back from us, just reinstall it and you’re back in business!


Common Issues



How To Remove TCM



This repair service will fix these issues:

  • DTC Codes U0101, U0100 (Lost communication with TCM)
  • P0700 - Faulty Transmission Computer Module
  • P0827 - Up and Down Shift Switch Circuit Low
  • P2669 - Computer circuit issue
  • Transmission not shifting issue

Our services are an affordable and effective alternative to expensive dealership part replacements that can save you hundreds of dollars, while continuing to provide an eco-friendly solution that reduces pollution. We drive our business towards consistent and profitable growth, with integrity and a commitment to the people and communities where we live and work. We do more than just repair the part, we go to the root of the problem and upgrade the components to ensure the issue does not return. We will quickly fix your malfunctioning part and return it back to you. Our service is 100% guaranteed or your money back.


NOTE:
✅ Better Than New: No programming required - No extra costs or delays for coding.
💪 Fully Sealed and Tested: 100% Weatherproof and fully tested - guaranteed.
🔧 Fast Turnaround: We get your work truck working fast! Only 2-3 day repair time.


Please refer to this troubleshooting guide if youre uncertain if the TCM is at fault:

Troubleshooting Guide For Allison TCMs

NOTE: We flash and program to the lastest Manufacturer settings based on your VIN. Any custom TCM software tunes must be backed up. We are not responsible for any lost TCM setting profiles.

GM engine codes that have this type of TCM: LBZ, LMM, LML, LLY, LGH  

Common Reasons Why Allison TCMs (2009-2015) Fail and the Advantages of Repairing Your Original Unit with UpFix

The Allison Transmission Control Module (TCM), also known as the Allison A50 TCM or T14 TCM, is a crucial component that manages the operation of your vehicles transmission. Commonly found in heavy-duty trucks and buses from 2009 to 2015, including GM vehicles equipped with the Duramax engine, this module ensures smooth gear shifts, optimal performance, and fuel efficiency. In forums and among mechanics, its sometimes referred to as the "brain" of the transmission or simply the "TCM module." When the TCM fails, it can lead to a range of transmission issues such as erratic shifting, limp mode activation, or even complete transmission failure. Understanding the common reasons for TCM failure and the benefits of repairing your original unit with UpFix can help you make an informed decision.

Common Reasons for Allison TCM Failure

1. Environmental Factors

  • Heat Exposure: Prolonged exposure to high temperatures can degrade the internal components and solder joints of the TCM.
  • Moisture Intrusion: Water or moisture entering the TCM housing can cause corrosion and electrical shorts.
  • Vibration Damage: Constant vibration from the vehicle can lead to physical damage or loosening of internal components.

2. Electrical Overloads

  • Voltage Spikes: Issues with the vehicles electrical system or improper jump-starting can cause voltage spikes that damage the TCM.
  • Short Circuits: Faulty wiring or damaged sensors can create short circuits affecting the TCMs functionality.

3. Component Wear and Tear

  • Capacitor Failure: Over time, capacitors may deteriorate, leading to erratic behavior or failure of the TCM.
  • Microprocessor Issues: Continuous thermal cycling and operational stress can lead to microprocessor failures.

4. Software Corruption

  • Faulty Updates: Incomplete or incorrect software updates can corrupt the TCMs programming.
  • Memory Loss: Power interruptions can cause loss of stored data, affecting transmission performance.

5. Manufacturing Defects

  • Poor Quality Components: Defective parts used during manufacturing can result in premature failure.
  • Solder Joint Failures: Inadequate soldering techniques can cause connections to break over time.

Why Repairing Your Original TCM with UpFix Is the Better Option

1. Cost-Effectiveness

  • Affordable Solution: Repairing your existing TCM with UpFix is typically less expensive than purchasing a new or used replacement.
  • Avoid Hidden Costs: New units may require additional expenses like programming fees and installation labor.

2. Guaranteed Compatibility

  • Exact Fit: Your original unit is perfectly matched to your vehicles specifications, ensuring seamless operation.
  • No Reprogramming Needed: Repairing the original unit with UpFix eliminates the need for costly reprogramming.

3. Reliability and Warranty

  • Known History: You are familiar with your units maintenance history, unlike an unknown used replacement.
  • Warranty Coverage: UpFix provides a warranty on our repair work, giving you peace of mind.

4. Environmental Responsibility

  • Reduce Waste: Repairing your TCM reduces environmental waste compared to discarding and replacing it.
  • Sustainable Choice: Extending the life of your TCM is an eco-friendly decision supporting sustainability.

5. Time Efficiency

  • Quick Turnaround: UpFix offers fast repair services, often quicker than sourcing and installing a replacement.
  • Minimize Downtime: Get back on the road sooner without the delays associated with new installations.

6. Professional Expertise

  • Specialized Technicians: UpFix technicians specialize in repairing Allison TCM units, ensuring high-quality workmanship.
  • Updated Components: Our technicians replace faulty parts with updated components that may be more durable than the originals.

At UpFix, we specialize in repairing Allison TCMs from 2009-2015 with precision and care. Our experienced technicians diagnose the specific issues affecting your unit and restore it to optimal performance. By choosing to repair your TCM with us, youre not only saving money but also investing in a reliable solution that extends the life of your vehicles transmission system.

Ready to Get Your Allison TCM Repaired?

Dont let a faulty TCM disrupt your driving experience. Contact us today to learn more about our repair services and how we can help you get back on the road safely and efficiently.

Contact UpFix Now

Text/Call: 888-979-9343

Email: [email protected]

Address: 4991 BU Bowman Dr. Buford GA 30518

Experience the UpFix difference—quality repairs, exceptional customer service, and a commitment to excellence.



Will this service fix my problems?

A full diagnostic check should first be performed to eliminate all other possible causes for your symptoms, even if the symptoms match those specified on the common fault description.

If you send a unit in good working condition due to misdiagnosis, and our testing determines that there are no issues or faults with the unit, or if the part is beyond repair, then you will only be responsible for the shipping costs and a bench test fee of $69.99 may be applied.

IMPORTANT! If you are not sure that this part is the cause of the fault then we recommend that you do not go ahead with this purchase and instead seek further professional advice and diagnosis.


See Why Our Customers Love UpFix!




Benefits of using us:
  • Free return trip shipping
  • Save hundreds of dollars
  • Fast & easy process
  • High quality components
  • 100% guaranteed or your money back
  • Amazing customer service and support
  • No programming needed
  • Plug-n-play
  • Refurbished and tested to meet manufacturers specifications
  • IPC certified technicians (highest standard of quality craftsmanship)
  • Hassle-free warranty that is much better than the warranties you get for new replacements.
How It Works

How It Works

Our services are an alternative to expensive dealership part replacement and save you hundreds!
We do more then just just repair the part. We go to the root of the problem and use new upgraded parts to ensure the issue does not return. Our service is 100% guaranteed or money back.

  1. Locate your product on our website.
  2. Match your symptoms with our descriptions to diagnose the issue.
  3. Place a repair order and receive a shipping label.
  4. Send your item to us.
  5. We'll repair and promptly ship it back to you!
Warranty

Warranty

Warranty covers the repair of the part for one full year.

If the repair fails within a year, we will repair the part again. In the rare occasion that the item is not repairable, we will either replace the circuit board entirely or refund the cost of the repair, at our discretion.

This warranty is non-transferable and applies to the original purchaser only.

Part Numbers

94668860

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GMC C6500 2007-2009 Allison A50 T14 Duramax GM (TCM) Transmission Control Module Repair
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  • GMC C6500 2007-2009 Allison A50 T14 Duramax GM (TCM) Transmission Control Module Repair video
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