Description
2007 Buick Rainier 5.3L TCM Transmission Control Module – Programmed Plug & Play
This Transmission Control Module (TCM / TCU) is a genuine OEM replacement for all 2007 Buick Rainier 5.3L 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
Leo Harrison –
I was really impressed with how easy the installation was thanks to the plug-and-play feature of this TCM. The programming was handled professionally, so it worked perfectly right out of the box with no additional setup needed. Shipping was quick and free, which was a nice bonus. Overall, the whole process was smooth and hassle-free.
Jack Mitchell –
This transmission control module fit my 2007 Buick Rainier perfectly and was ready to go right out of the box. Installation was straightforward and didn’t require any programming on my end, which saved me a lot of time and hassle. The part arrived quickly and works exactly as expected, making the vehicle shift smoothly again. I appreciate the clear instructions and the quality of the product.
Liam Cooper –
Arrived quickly with free shipping and worked perfectly right out of the box—highly recommend for anyone needing a programmed TCM.
Luke Morris –
I was a bit nervous about ordering a replacement TCM for my 2007 Buick Rainier, but this unit arrived quickly and was already programmed, making the installation straightforward. The plug-and-play setup saved me a lot of hassle since I didn’t have to search for a separate programming service. Shipping was free, which was a nice bonus. I appreciated how the seller kept me informed throughout the process, answering my questions promptly. Overall, this was a smooth experience, and the transmission is shifting perfectly now.
Victor Cook –
I was a bit nervous about replacing the transmission control module myself, but this 2007 Buick Rainier TCM made the whole process surprisingly simple. The fact that it came programmed and ready to go saved me so much time. Installation was straightforward, like it was made specifically for this model. After swapping it out, my transmission shifted smoothly again without any issues. Shipping was fast too, so I had everything back on the road in no time. Definitely a quality part that worked exactly as promised.
Jack King –
I was really impressed with how straightforward this TCM module was to install on my 2007 Buick Rainier. It arrived quickly and came already programmed, so I didn’t have to fuss with any complicated setup. After swapping it out, my transmission shifted smoothly again, and the check engine light went away. It felt like I got my truck back to perfect working condition without paying a fortune at the shop. Definitely recommend this if you need a reliable replacement that just works from the get-go.
Adrian Green –
This TCM module was a breeze to install and had my Rainier shifting perfectly again in no time. Fast shipping and great support made the whole process smooth.