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: 647-247-8555
Ryan Miles –
I was really impressed with the fast shipping and how the unit came fully programmed and ready to install. The 2009 GMC Sierra ECM was truly plug-and-play, making the installation process smooth and hassle-free. Their service saved me a significant amount compared to dealer prices, and they answered all my questions promptly. Overall, a professional experience that got my truck running like new in no time.
John Reed –
I purchased the 12629209 ECM for my 2009 GMC Sierra and was really impressed by how easy the plug-and-play setup was. The unit arrived quickly with free shipping, which was a nice bonus. Customer service was very responsive when I had questions about the installation, and the truck has been running flawlessly since the swap. Highly recommend for anyone needing a reliable, pre-programmed ECM.
Jose Lopez –
Fast shipping and the PCM came perfectly programmed for my 2009 GMC Sierra—worked like a charm right out of the box.
Miguel Nelson –
I was a bit nervous ordering an ECM online, but this 2009 GMC Sierra unit arrived exactly as described and was already VIN programmed, which saved me a ton of hassle. The shipping was surprisingly quick and free, so I didn’t have to worry about extra costs. When I had a couple of questions about installation, their support team responded promptly and walked me through everything. Once installed, my truck fired up perfectly with no check engine lights or errors. Overall, a smooth experience from start to finish—I highly recommend this seller for anyone needing a reliable ECM.
Travis Gray –
I was really impressed with how quickly the ECM arrived after I placed my order. The unit was perfectly programmed for my 2009 GMC Sierra 4.3L, and installation was a breeze—just unplug the old one and plug this in. It saved me a substantial amount compared to the dealer’s price, which was a huge relief. The communication from the seller was clear and timely, so I always knew what to expect. Overall, it made a stressful situation much easier and more affordable.
Matthew Kelly –
Fast shipping and a true plug-and-play unit—installation was a breeze and saved me a ton compared to dealer prices. Great communication and super reliable!
Shane Nichols –
I purchased the 12629209 ECM for my 2009 GMC Sierra, and I couldn’t be happier with the experience. From start to finish, the staff kept me informed about the programming status, which really eased my nerves. The unit arrived already VIN programmed, so installation was straightforward, and my truck fired right up without any issues. Shipping was free and surprisingly quick, which was a nice bonus. It feels great to have my Sierra running smoothly again without the hassle of going to a mechanic. Highly recommend this service to anyone needing an ECU replacement.