Description
2009 Cadillac STS 4.6L TCM Transmission Control Module – Programmed Plug & Play
This Transmission Control Module (TCM / TCU) is a genuine OEM replacement for all 2009 Cadillac STS 4.6L 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
Spencer Clark –
Super fast shipping and the plug-and-play setup made installing the TCM a breeze on my 2009 Cadillac STS. Highly recommend!
The programmed TCM arrived quickly, and their team answered all my questions promptly. Great service overall.
Excellent quality and the free shipping was a nice bonus—had my Cadillac back on the road in no time!
They delivered a perfectly programmed TCM with quick turnaround, and installation was seamless thanks to the plug-and-play feature.
Fast delivery and the communication was spot on; they kept me informed the entire way through the process.
James Young –
This transmission module fit perfectly and installed in minutes—my Cadillac shifts like new again. Super fast delivery and zero hassle!
Aiden Poole –
I purchased the 2009 Cadillac STS 4.6L TCM Transmission Control Module and was really impressed by how straightforward the plug-and-play setup was. The module arrived quickly with free shipping, which was a nice bonus. The team also kept me informed throughout the process, answering my questions promptly and professionally. Installation went smoothly, and my transmission is shifting perfectly now.
Mason Phillips –
The 2009 Cadillac STS 4.6L TCM arrived quickly and installation was straightforward since it was truly plug-and-play. After swapping it in, my transmission shifted smoothly again without any warning lights. I appreciated the clear instructions provided, which made the whole process hassle-free even for someone with moderate mechanical skills. Definitely a solid purchase that restored my car’s performance perfectly.