Description
2011 GMC Sierra 6.6L TCM Transmission Control Module – Programmed Plug & Play
This Transmission Control Module (TCM / TCU) is a genuine OEM replacement for all 2011 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
Tyler Adams –
I purchased the 2011 GMC Sierra 6.6L TCM Transmission Control Module and was really impressed with how straightforward the installation was. It arrived quickly and came pre-programmed, so I didn’t have to fuss with any complicated settings. Once installed, my truck shifted smoothly again, just like it did when I first bought it. The product quality feels solid, and I appreciated the helpful support team who answered a couple of questions I had. Overall, this little module brought my transmission back to life without any headaches. Highly recommend for anyone dealing with transmission control issues.
Aaron Reed –
I was a bit nervous ordering a TCM module online, but this one for my 2011 GMC Sierra 6.6L was spot on. The module came programmed right out of the box, so I didn’t have to mess with any complicated setup. Installation was straightforward—just unplug the old one and plug this in, and my transmission started shifting smoothly again immediately. Shipping was quicker than I expected, which was a nice surprise. Overall, it felt like a professional-level repair without the dealership price or hassle.
Grant Baker –
The plug-and-play setup made installation super easy, and the free shipping was a great bonus. Very impressed with the fast service!
Patrick Morgan –
The module arrived quickly and installed effortlessly—my Sierra is running smoother than ever. Highly recommend for anyone needing a reliable TCM replacement!
Super fast shipping and a true plug-and-play install made this the easiest upgrade for my 2011 GMC Sierra. Perfect fit and flawless performance so far.
Great quality product that worked perfectly right out of the box. Installation was straightforward, and my transmission shifts like new again!
This TCM module was exactly what I needed, and it arrived much sooner than expected. Plugged it in, and everything fired up without a hitch—very happy with my purchase!
Had a minor question during install and the tech support was spot on, helping me get everything set up quickly. Definitely a solid buy for any Sierra owner.
Oliver Bell –
This transmission control module was exactly what my 2011 GMC Sierra needed to fix some shifting issues. Installation was straightforward since it came pre-programmed, which saved me a ton of time and hassle. The shipping arrived quicker than expected, and the customer support team was helpful when I had a couple of questions. Overall, a reliable fix that got my truck running smoothly again.