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






Russell Tucker –
I ordered the 12629019 ECM for my 2009 GMC Sierra, and the entire process was smooth from start to finish. The unit came VIN programmed and was truly plug-and-play, which saved me a lot of time and hassle. Shipping was free and arrived faster than expected. Their team was also very responsive when I had a few questions about installation.
Luke Rivera –
Fast shipping and the unit was truly plug-and-play—saved me a bundle compared to dealer prices. Installation went smoothly thanks to their professional service.
Luis Chapman –
Fast shipping and the ECU arrived perfectly programmed for my 2009 Sierra—installation was a breeze. The seller kept me informed every step of the way, which made the whole process stress-free.
Victor King –
I was impressed with how quickly the 2009 GMC Sierra ECM arrived—it was shipped fast and arrived right when promised. The unit was truly plug-and-play, making the installation process straightforward and hassle-free. Compared to dealer prices, this option saved me a significant amount of money without compromising quality. The communication was clear throughout, which made the whole experience even better.