Description
2020 GMC Terrain 2.5L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2020 GMC Terrain 2.5L 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
Jorge Evans –
The ECM arrived quickly with free shipping and was perfectly programmed for my 2020 Terrain—installation was a breeze.
Excellent communication throughout the process, and the plug-and-play setup had my GMC running like new in no time.
Fast shipping and the professional programming service saved me a ton of hassle; highly recommend.
They answered all my questions promptly and provided a flawless ECM that fit my 2020 Terrain without any issues.
Great quality PCM with very reasonable shipping, and it came pre-programmed exactly as promised.
Tyler Wilson –
I ordered the 12704018 ECM for my 2020 GMC Terrain, and I’m really impressed with the whole experience. The unit arrived quickly with free shipping, and it was already VIN programmed, so installation was straightforward. They also provided great support when I had a couple of questions, responding promptly and clearly. Overall, the quality of the part exceeded my expectations, and my vehicle runs perfectly now.
Allan Watson –
I was a bit nervous about ordering an ECU online for my 2020 GMC Terrain, but this experience exceeded all my expectations. The unit arrived quickly with free shipping, which was a nice bonus. What really stood out was how professional the programming service was—they had my VIN programmed perfectly before it even arrived, so it was a true plug-and-play replacement. Throughout the process, their team kept me informed and answered all my questions promptly. Installation was straightforward, and my Terrain runs like new again. Highly recommend this seller for anyone needing ECU replacements!
Oliver Walker –
Fast shipping and a true plug-and-play unit that fit perfectly. This saved me a bundle compared to dealer pricing and the whole process was hassle-free.