Description
2009 GMC Sierra 6.6L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2009 GMC Sierra 6.6L 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
David Lewis –
Shipped quickly and worked perfectly right out of the box—exactly what I needed for my Sierra. Super smooth install!
This ECM was spot-on for my 2009 GMC, and the VIN programming saved me a ton of headaches. Highly recommend!
Plugged it in, and my truck fired up without a hitch. Impressive quality and fast delivery.
Great product with flawless compatibility; got my Sierra running like new again in no time. Plus, support was really helpful when I had questions.
Installed this ECM in less than an hour and everything runs like a dream—definitely worth it!
Patrick Wright –
I was a bit nervous ordering an ECM online, but this one arrived quickly and was already programmed for my 2009 GMC Sierra’s VIN. Installation was straightforward—just plugged it in and everything fired up perfectly without any hiccups. It’s been running smoothly since the swap, and I’m really impressed with how hassle-free the whole process was. Definitely saved me a trip to the dealer and some serious downtime.