Description
2014 GMC Sierra 4.3L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2014 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
Diego Lopez –
I was a bit nervous about ordering an ECM online for my 2014 GMC Sierra, but this unit exceeded my expectations. The shipping arrived much sooner than I thought it would, which was a pleasant surprise. Once I got it, the plug-and-play setup made the installation incredibly smooth—I didn’t need any special tools or extra programming on my end. The whole experience saved me a ton compared to the dealer’s price, and their customer support was very responsive when I had a couple of questions. I’m really happy with the quality and the professional service throughout the process.
Kevin Campbell –
The unit arrived quickly, was plug-and-play, and saved me a bundle compared to dealer prices—installation was seamless and the service was top-notch.
Fast shipping and easy installation made this ECM a no-brainer; saved a lot versus dealer fees and the team kept me informed the whole time.
Super fast delivery and the unit worked perfectly right out of the box; the cost savings over the dealer were huge and the process was hassle-free.
Got my programmed ECM in no time, plugged it in with zero issues, and saved hundreds over dealer service—very professional and efficient all around.
Quick shipping, straightforward install, and the price beat the dealer by miles; this service definitely saved me time and money without any headaches.
Colin Stewart –
Fantastic quality and the VIN programming was flawless—plus, they shipped it quickly at no extra cost.
The plug-and-play setup made installation a breeze, and their team answered all my questions right away.
Great product with a speedy turnaround, and the free shipping was a nice bonus.
They kept me updated throughout the process and the ECM worked perfectly on my Sierra.
Very professional programming service and the shipping was surprisingly fast and affordable.
Jorge Payne –
I was really impressed with how quickly the 2014 GMC Sierra ECM arrived—shipping was definitely faster than I expected. The unit was fully programmed and truly plug-and-play, making the installation process smooth and hassle-free. Choosing this service saved me a significant amount compared to dealership prices, and their communication was clear and professional throughout. Overall, a fantastic experience that I would recommend to anyone needing an ECU replacement.