Description
2008 GMC Sierra 6.2L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2008 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:
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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
Miguel Moore –
Installed this ECM in minutes and my truck fired right up—super smooth experience and quick delivery. Couldn’t ask for an easier plug-and-play setup!
Got exactly what I needed for my 2008 Sierra with zero hassle. Shipping was fast and the VIN programming saved me a ton of time.
This ECU fit perfectly and worked flawlessly out of the box. A solid upgrade with no headaches, highly recommend!
Perfect match for my GMC, arrived quickly and was ready to go right away. Makes tuning my truck a breeze with no extra work required.
Super impressed with how easy the install was; no coding or extra tools needed. The unit works great and the support was really responsive too.