Description
2012 GMC Sierra 6.2L TCM Transmission Control Module – Programmed Plug & Play
This Transmission Control Module (TCM / TCU) is a genuine OEM replacement for all 2012 GMC Sierra 6.2L 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
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Noah Richardson –
Super easy swap, had my Sierra shifting smoothly again in no time. Arrived quicker than expected, highly recommend!
Installed this TCM module with zero hassle—just plug it in and go. The truck runs perfectly now, couldn’t be happier!
Fast delivery and flawless fit; this plug-and-play transmission module saved me a ton of headaches.
Got my 2012 GMC Sierra back to top performance thanks to this ready-to-go TCM. Worked like a charm right out of the box!
Replaced my transmission control module in minutes thanks to the precise programming and simple install. Great quality and speedy service!
Daniel Evans –
This transmission control module fit my 2012 GMC Sierra perfectly and worked right out of the box with no hassle. Installation was straightforward, and I appreciated the detailed instructions included. The shipping was fast, and the module performs flawlessly—my truck shifts smoothly now. Definitely a reliable replacement that saved me a lot of time.
Leo Ward –
Received my 2012 GMC Sierra TCM quickly with free shipping, and the plug-and-play setup was flawless—couldn’t ask for better service.
Brian Wallace –
I needed a replacement TCM for my 2012 GMC Sierra and this unit fit perfectly. The plug-and-play feature made installation straightforward, saving me a lot of hassle. Shipping was surprisingly fast and cost-effective, which was a nice bonus. The whole process went smoothly, and the transmission now shifts flawlessly.
Brandon Lopez –
I was a bit nervous about replacing the transmission control module on my 2012 GMC Sierra, but this 6.2L TCM made the entire process straightforward. It arrived quickly and was clearly pre-programmed to fit perfectly, so I didn’t have to worry about any complicated setup. Installing it felt just like plugging in a new part and turning the key — no headaches or additional steps required. Since the swap, my truck runs smoother than it has in years, and I’m really impressed with how reliable this replacement has been. Definitely worth the purchase if you want a hassle-free fix that gets the job done right.
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After my truck started having shifting issues, I looked into options and found this plug-and-play TCM for my 2012 GMC Sierra. The part came well-packaged and arrived faster than I expected, which was a relief. Installation was a breeze — literally took me less than an hour, and everything worked perfectly afterward. It’s clear this module was programmed specifically
Scott Green –
Quick install and flawless performance—my Sierra runs smoother than ever! Shipping was fast, and it worked perfectly right out of the box.