Description
2009 GMC Sierra 4.8L TCM Transmission Control Module – Programmed Plug & Play
This Transmission Control Module (TCM / TCU) is a genuine OEM replacement for all 2009 GMC Sierra 4.8L 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
Chris Gray –
This transmission module was exactly what I needed—came pre-programmed and installed in minutes with zero hassle. Super fast delivery too!
Justin Parker –
I was a bit nervous about replacing the transmission control module myself, but this 2009 GMC Sierra 4.8L TCM made the process surprisingly smooth. It arrived quicker than I expected, and installation was truly plug-and-play—no complicated programming needed. Once installed, my truck shifted flawlessly and the transmission light stayed off. It’s clear this unit was programmed perfectly for my vehicle. I’m really impressed with the quality and ease of use, and it saved me a ton on repair costs. Highly recommend this to anyone looking to fix their transmission issues without hassle.
Aaron Rivera –
Installed the 2009 GMC Sierra 4.8L TCM module without any issues—truly a plug-and-play experience. The transmission shifts are noticeably smoother now, and the truck runs like new again. Shipping was quick, and I appreciated the clear instructions included. Overall, a solid purchase that fixed my transmission problems efficiently.
Nathan Palmer –
The plug-and-play setup made installation a breeze, and the free shipping was a nice bonus. Highly recommend!