Description
2012 GMC Sierra 6.2L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 GMC Sierra 6.2L models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with no dealer visit required.
Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
Every ECU is inspected, refreshed, and verified through advanced diagnostic tools. Testing includes:
Complete communication & CAN-bus verification
Sensor input/output and signal integrity checks
Injector & ignition pulse simulation
Power, ground, and load-circuit analysis
Flash memory integrity and checksum validation
Thermal and voltage-stress testing to confirm reliability
This ensures a fully functional, reliable, plug-and-play module you can install with confidence.
Important Note
Some vehicles with IMMO or PATS may require key programming after installation. This is normal.
For a 100% plug-and-play solution with no relearns, your original ECU must be sent in for cloning. We transfer all security data to the replacement unit.
👉Add the cloning service as a bundle at checkout — $200 CAD / $140 USD
A prepaid shipping label will be emailed to you.
If cloning is not selected, the ECU will be VIN programmed, and a key relearn will be required after installation.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Ryan Cooper –
This ECM fit perfectly and was ready to go right out of the box—installation was a breeze. Quick delivery and flawless performance!
Exactly what I needed for my 2012 Sierra, came pre-programmed and worked without any hiccups. Super fast shipping too!
Plugged it in, started the truck, and everything ran like new again. Great quality and the support team was very helpful.
No headaches, no extra work—just a simple swap and my GMC is running smoothly once more. Highly recommend!
Fast arrival, perfect fit, and true plug-and-play functionality made this ECM an easy fix. Couldn’t be happier!
Cooper Gray –
I was pleasantly surprised by how straightforward the installation was with this ECM. It arrived quickly and was already programmed to my VIN, which saved me a ton of time and hassle. Since swapping it in, my 2012 GMC Sierra runs flawlessly with no error codes. Definitely a reliable and convenient solution for anyone needing a replacement.