Description
2007 Buick Rainier 4.2L TCM Transmission Control Module – Programmed Plug & Play
This Transmission Control Module (TCM / TCU) is a genuine OEM replacement for all 2007 Buick Rainier 4.2L 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
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
Noah Richardson –
I was really nervous about ordering a transmission control module online, especially one that needed to be programmed for my 2007 Buick Rainier. But from the moment I received this unit, everything went smoothly—it was already programmed and ready to go, so installation took no time at all. My transmission shifts feel smooth again, just like when the vehicle was new. Shipping was surprisingly quick, and I appreciated the clear instructions that came with it. Overall, this was exactly what I needed to get my truck back on the road without a hassle. I’d definitely recommend this for anyone needing a reliable replacement.
Jonah Marshall –
I was really impressed with how smoothly the 2007 Buick Rainier TCM installation went. The module arrived pre-programmed and truly was plug-and-play, which saved me a lot of hassle. Shipping was fast and very reasonable, and their team kept me informed every step of the way. It feels great to have my transmission shifting perfectly again without any extra headaches.
Jason Reed –
This transmission control module fit my 2007 Buick Rainier perfectly and was ready to go right out of the box. Installation was straightforward since it’s truly plug-and-play, which saved me a lot of time and hassle. The vehicle is shifting smoothly again, and I’m really impressed with how quickly it arrived after ordering. Highly recommend for anyone needing a reliable replacement part.
Joel Wright –
Fast shipping and the plug-and-play setup made replacing my 2007 Buick Rainier TCM a breeze—works perfectly!
James Murphy –
This TCM module fit perfectly and installed in minutes—my Rainier shifts like new again. Shipping was quick and hassle-free!
Logan Kelly –
I was really nervous about replacing the transmission control module on my 2007 Buick Rainier, but this unit made the process so much simpler than I expected. It came already programmed to match my vehicle, which saved me a ton of time and hassle at the mechanic. Installation was straightforward—just a quick plug-and-play setup with no complicated rewiring. After swapping it in, my transmission shifts feel smooth and responsive again, just like when the truck was new. Also, the delivery was impressively quick, so I didn’t have to wait long to get back on the road. Overall, a hassle-free purchase that truly fixed my car’s shifting issues.