Description
2012 GMC Sierra 6.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 GMC Sierra 6.6L 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
Noah Smith –
The ECM arrived quickly with free shipping and was perfectly programmed for my 2012 Sierra—installation was a breeze.
Great communication throughout the process and the plug-and-play setup saved me a ton of hassle.
They handled the VIN programming professionally and had the part shipped out super fast, which I really appreciated.
Excellent quality and the team answered all my questions promptly, making this purchase stress-free.
Fast turnaround and the ECM worked flawlessly right out of the box, definitely worth it.
Bruce Willis –
I needed a replacement ECM for my 2012 GMC Sierra 6.6L, and this unit arrived exactly as described, already VIN programmed. The setup was truly plug-and-play, which saved me a lot of time and hassle. Shipping was surprisingly quick and reasonable, so I wasn’t out of pocket for long. Customer service was great too—they answered all my questions promptly and kept me in the loop throughout the process. Since installing it, my truck has been running flawlessly without any issues. Highly recommend this seller if you want a smooth, no-stress experience.
Spencer Sanders –
I purchased the 2012 GMC Sierra 6.6L ECM and was impressed by how smoothly the VIN programming process went. The team provided professional programming service making the installation completely plug-and-play, which saved me a lot of hassle. Shipping was very reasonable and the unit arrived quicker than I expected. Overall, the quality and service exceeded my expectations.
Elijah Tucker –
Fast shipping and the unit was truly plug-and-play. Saved me a bundle versus the dealer, and the install was hassle-free.