Description
2012 GMC Sierra Hybrid 6.0L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 GMC Sierra Hybrid 6.0L 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:
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Complete communication & CAN-bus verification
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Sensor input/output and signal integrity checks
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Injector & ignition pulse simulation
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Power, ground, and load-circuit analysis
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Flash memory integrity and checksum validation
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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 equipped with IMMO (Immobilizer) or PATS (Passive Anti-Theft System) may require additional key programming after installation. This is normal for models where security data must be synchronized with the vehicle’s body control system.
For a 100% plug-and-play solution with no relearns, no key programming, and no compatibility issues, we recommend our ECU Cloning Service, which transfers all original security, immobilizer, and configuration data directly into the replacement unit.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Mark Morris –
I was a bit nervous about replacing the ECM on my 2012 GMC Sierra Hybrid, but this unit made the process surprisingly smooth. It shipped quickly, and when I received it, everything was already programmed to my VIN, which saved me a ton of hassle. Installation was straightforward—just plug and go—and the truck fired up right away without any error codes. It’s been running flawlessly since, with improved responsiveness and fuel efficiency. Definitely worth the investment if you want a hassle-free solution.
After a prolonged battle with engine issues, I decided to replace the ECM with this programmed unit, and I’m glad I did. The setup was genuinely plug-and-play; I didn’t need to mess with any complicated programming or tools. The part fit perfectly and the shipping time was faster than I expected. My Sierra feels like it’s back to its old self, with smoother starts and no warning lights on the dash. Customer support was also very helpful when I had questions before ordering, which gave me peace of
Patrick Carter –
I was a bit worried about replacing the ECM on my 2012 GMC Sierra Hybrid, but this unit was spot on. It came already programmed to my VIN, which saved me a ton of hassle and time. Installation was straightforward—just plugged it in and the truck fired right up without any errors. Shipping was quick and the seller was responsive when I had a couple of questions. Highly recommend for anyone needing a reliable replacement!
Tyler Edwards –
This ECM arrived quickly and worked seamlessly with my 2012 GMC Sierra Hybrid—plug it in and go, couldn’t be easier!
Superb quality and the VIN programming saved me a ton of hassle; install was straightforward and trouble-free.
Fast shipping and a perfect fit for my truck, the plug-and-play setup made this upgrade painless.
Had my Sierra up and running in no time thanks to this ready-to-go ECM; definitely recommend to anyone needing a reliable replacement.
The unit matched exactly what I needed, plus the tech support was super helpful when I had questions—five stars all the way!