Description
2007 GMC Sierra 4.3L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2007 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



Jose Morris –
I was really impressed with how quickly this ECM arrived—the fast shipping was a pleasant surprise. Installation was straightforward since the unit came VIN programmed and was completely plug-and-play, which saved me a lot of headaches. Choosing this over a dealer repair definitely saved me a significant amount of money. The seller also kept me informed throughout the process, making the whole experience smooth and hassle-free.
Dominic Russell –
I was really impressed with how quickly this ECM arrived—definitely faster than I expected. Installation was a breeze since it was fully programmed and plug-and-play, which made the whole process stress-free. This saved me a ton of money compared to what the dealer quoted for a replacement unit. The communication from the seller was clear and helpful, answering all my questions promptly. Overall, a smooth experience that got my 2007 GMC Sierra back on the road without any hassle. I’d recommend this to anyone needing a reliable ECM replacement.
Elliot Nelson –
The ECM arrived quickly with free shipping, and the plug-and-play programming made installation a breeze. Communication was top-notch throughout the entire process.
Owen Howard –
I purchased the 12638026 ECM for my 2007 GMC Sierra 4.3L, and it arrived exactly as described, with VIN programming already completed. The free shipping was a nice bonus, and the part fit perfectly with a seamless plug-and-play setup. Their team was very responsive and quickly answered all my questions, which made the whole process stress-free. Overall, a great experience and the truck runs like new again.
Hunter Reed –
Shipping was super fast and the plug-and-play unit worked perfectly, saving me a ton compared to dealer prices. Installation was smooth and the customer support was spot on.