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
Max Poole –
Received the programmed ECM quickly with free shipping, and it was a perfect fit for my 2014 GMC Sierra. Setup was seamless thanks to their plug-and-play service.
Grant Sharp –
The ECM arrived quickly and was truly plug-and-play, saving me a bundle compared to dealer prices. Installation was straightforward and the communication from the seller was spot-on.
Adam Torres –
I ordered the 12665217 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 surprise. They handled the VIN programming professionally, so it was basically plug-and-play once it got here. The truck is running perfectly now, and I appreciated how they answered all my questions promptly throughout the process.