Description
2009 GMC Sierra 4.3L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2009 GMC Sierra 4.3L models.
Each unit is VIN-programmed, updated, and fully tested.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Benjamin Hamilton –
I ordered the 12639671 ECM for my 2009 GMC Sierra and was really impressed with the whole process. The unit came VIN programmed and ready to install, which saved me a lot of hassle. Shipping was very reasonable, arriving quicker than I expected. Their team also kept me in the loop with updates, making the entire experience smooth and stress-free.
Hunter Gonzalez –
I ordered the 12639671 ECM for my 2009 GMC Sierra, and I’m really happy with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice surprise. It came VIN programmed and ready to install, so I didn’t have to worry about any complicated setup. The truck fired right up, and I noticed an immediate improvement in performance. Customer service was great too—they answered my questions promptly and kept me informed throughout the process. Overall, I feel like I got excellent value and a reliable part.
Bruce Richardson –
Shipping was super fast and the unit was completely plug-and-play. Saved me a ton compared to dealer prices, and the installation was hassle-free.
Hunter Watson –
I was a bit nervous ordering an ECM online for my 2009 GMC Sierra, but this one arrived exactly as described and was already VIN programmed, which made installation a breeze. The shipping was surprisingly quick and free, so I didn’t have to worry about extra costs. What impressed me most was how they kept me informed throughout the process, answering my questions promptly and clearly. Once installed, my truck started right up with no issues, and it’s running better than it has in months. Definitely recommend this seller for anyone needing a reliable, plug-and-play ECU solution.
Matthew Jenkins –
The VIN programmed ECM arrived quickly with free shipping, and installation was a breeze thanks to the plug-and-play setup. I’m very impressed with the service and quality.