Description
2008 Chevrolet Impala 3.9L TCM Transmission Control Module – Programmed Plug & Play
This Transmission Control Module (TCM / TCU) is a genuine OEM replacement for all 2008 Chevrolet Impala 3.9L 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
Hunter Baker –
I was really impressed with how smoothly this Transmission Control Module fit into my 2008 Chevy Impala. Installation was straightforward, and I didn’t have to mess with any complicated programming since it came ready to go. My car’s shifting feels so much smoother now, and it’s like I just gave it a second life. The package arrived quicker than I expected, which was a nice bonus. Overall, this was exactly what I needed to get back on the road without any hassles.
Henry Peterson –
This TCM fit perfectly in my 2008 Impala and had me back on the road in minutes—super easy install and quick delivery!
Installed this module with zero hassle, and the car runs smoother than ever; plus, the support team answered my questions fast.
Plugged it in, and it just worked—no programming headaches and shipped faster than I expected.
The 3.9L TCM was exactly as described, arrived quickly, and the setup was truly seamless.
Great quality and straightforward install; my Impala’s transmission shifted perfectly right after replacement.
Harvey Morris –
The plug-and-play setup made installing this TCM hassle-free, and the free shipping was a nice bonus. Communication was clear and quick throughout the process.
Andrew Gonzalez –
I was impressed with how straightforward the installation was, thanks to the plug-and-play setup of this TCM. The programming was done professionally before shipping, so it fit perfectly into my 2008 Impala 3.9L right out of the box. Shipping was speedy and reasonably priced, which was a nice bonus. Overall, this made replacing my transmission control module much less stressful than I expected.
Kyle Morgan –
The 2008 Chevrolet Impala TCM arrived quickly and was exactly as described. Installation was straightforward—just plugged it in and got immediate results without any complicated programming. My transmission shifts are smoother now, and the car feels like new again. Definitely recommend for anyone needing a reliable replacement module.