Description
2014 GMC Sierra 6.6L TCM Transmission Control Module – Programmed Plug & Play
This Transmission Control Module (TCM / TCU) is a genuine OEM replacement for all 2014 GMC Sierra 6.6L models. Each unit is pre-programmed to your vehicle’s VIN and updated to the latest manufacturer calibration for a true plug-and-play installation with no dealer visit required.
Built to OEM standards for reliability, shift quality, and long-term performance.
Strict Testing & Quality Assurance
Each TCM is fully refurbished, bench-tested, and inspected by our certified in-house technicians.
We use professional off-board testing equipment to verify:
Proper CAN-bus communication
Shift-solenoid activation
Input/Output sensor signal validation
Temperature and load simulation
Live-data performance under simulated driving conditions
No module leaves our facility without passing a full quality control inspection. This ensures you receive a unit that performs better than new at an unbeatable value.
Common Symptoms of a Faulty TCM
Hard shifting / delayed shifting
Gear slipping
Stuck in Limp Mode
Transmission overheating
Erratic gear changes
Poor fuel economy
Trouble codes related to shift solenoids or communication
Important Note
This TCM is fully programmed and updated and does not require additional programming after installation.
Simply install the unit and the vehicle will recognize it automatically.
If your original TCM has unique calibration or custom parameters, we also offer a TCM Cloning Service, which transfers all data-including VIN, shift adaptations, and configuration settings-into the replacement unit.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Scott Miller –
This TCM was exactly what my 2014 Sierra needed—easy to install and had me back on the road in no time. Highly recommend!
Paul Carter –
I was really impressed with how easy the installation was thanks to the plug-and-play setup on this 2014 GMC Sierra TCM. The company also provided professional programming, which saved me a lot of hassle. Shipping was surprisingly quick and didn’t cost an arm and a leg, so I had my truck back on the road sooner than expected. Their customer service was very responsive too, answering all my questions promptly.
Sean Anderson –
I was a bit nervous about replacing the transmission control module on my 2014 GMC Sierra, but this unit was exactly what I needed. It arrived quickly and was pre-programmed, so installation was straightforward with no guesswork involved. Once installed, my truck shifted smoothly again, and I didn’t have to take it to a mechanic or mess with complicated setup procedures. The whole process saved me time and frustration, and I appreciated the clear instructions that came along. Definitely a solid purchase for anyone looking to get their transmission system back in shape without hassle.
After doing some research and hearing about how tricky TCM replacements can be, I was relieved to find this plug-and-play module for my 2014 GMC Sierra. The part fit perfectly and worked immediately after installation—no additional programming was required on my end. I also appreciated the prompt shipping and friendly customer support, who answered a couple of questions before I ordered. It’s great to find a product that truly matches its description and makes a
Trevor Gray –
The plug-and-play setup was seamless, and the free shipping made the whole process even better. Highly recommend!
Samuel Brown –
This Transmission Control Module for my 2014 GMC Sierra was exactly what I needed. It arrived quickly and was already programmed, which made the installation straightforward and hassle-free. After swapping it out, my truck shifted smoothly again without any hiccups. I appreciate that it was a true plug-and-play part—saved me a lot of time and frustration.