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
Chris Brown –
I had an issue with my 2014 GMC Sierra’s ECM, and after searching around, I decided to buy this VIN-programmed unit. The whole process was smoother than I expected—what really stood out was their professional programming service, which made installation practically plug-and-play. They also kept me informed at every step, answering my questions quickly and clearly. The part arrived faster than I anticipated, and once installed, my truck ran perfectly. Definitely recommend this if you need a hassle-free replacement.
Cole Smith –
The VIN programmed ECU arrived quickly with free shipping, and it was a perfect plug-and-play fit for my 2014 Sierra. Great communication throughout the process made this an easy purchase.
Jack Howard –
I ordered the 2014 GMC Sierra 4.3L ECM and was impressed by how quickly it arrived. The unit was truly plug-and-play, making installation straightforward and hassle-free. Choosing this service over the dealer saved me a significant amount of money, and the communication throughout the process was clear and professional. Overall, a smooth experience that I highly recommend.
Noah Barrett –
Fast shipping and this ECM was truly plug-and-play—saved me a bundle versus dealer prices. Installation went smoothly, and the team’s communication was spot on.
Blake Sharp –
I purchased the 12673228 ECM for my 2014 GMC Sierra and was really impressed with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. They provided professional VIN programming, so it was basically a plug-and-play experience with no headaches. Customer service was also very responsive, answering all my questions promptly throughout the process.