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
Jeremy Sanders –
I ordered the 12673676 ECM for my 2014 GMC Sierra, and I’m very pleased with the performance. The unit arrived quickly with free shipping, and it was already VIN programmed, so installation was a breeze. The communication from the seller was excellent—they responded promptly to all my questions and kept me informed throughout the process. Overall, a smooth experience and the engine runs perfectly now.
Jose Bates –
I was relieved to find this ECM for my 2014 GMC Sierra because my original one was acting up. The fact that it came VIN programmed saved me a ton of hassle, and the setup was completely plug-and-play. Shipping was surprisingly fast and affordable, which was a nice bonus. Throughout the process, the seller kept me updated on the status of my order, so I always knew what was going on. Once installed, my truck ran smoothly again without any hiccups. Highly recommend this service for anyone needing a reliable replacement ECM.
Isaac Kelly –
Great quality ECM for my 2014 GMC Sierra, and the plug-and-play setup made installation a breeze. Shipping was super fast too!
Aaron Palmer –
Received the ECM super quick, plug-and-play right out of the box, and it saved me a ton compared to dealer prices. Installation was hassle-free and the customer support was really helpful.
Allan Payne –
I was really impressed with how smoothly everything went with this ECM for my 2014 GMC Sierra. The unit arrived quickly, and the best part was that it came VIN programmed, so installation was pretty much plug-and-play. The company kept me informed throughout the whole process, answering my questions promptly, which made me feel confident about my purchase. After swapping it in, my truck runs like new again—no more engine hiccups or warning lights. Definitely a hassle-free experience from start to finish.