Description
2018 GMC Sierra 6.0L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2018 GMC Sierra 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
Adam Ward –
I was pretty nervous about replacing the ECM on my 2018 GMC Sierra, but this unit made the whole process so much easier than I expected. It came programmed to my VIN right out of the box, which saved me a ton of hassle and time. Installation was truly plug and play—no complicated setups or extra trips to the mechanic. The shipping arrived faster than anticipated, and when I had a quick question, their support team was friendly and knowledgeable. Overall, this was a smooth experience, and my truck runs perfectly now.
After my original ECU failed, I was worried I’d have to wait weeks to get back on the road, but this replacement showed up faster than expected and was already programmed to my truck’s specs. Swapping it out was straightforward, with no need for additional coding or tuning. It’s reassuring to see a product that truly lives up to the plug-and-play promise. Plus, the customer service was responsive when I reached out for a couple clarifications. My
Jacob Torres –
Exactly what I needed for my 2018 Sierra; installation was quick and it worked flawlessly right out of the box. Super impressed with the fast delivery too!
Mason Moore –
This ECM arrived quickly and was exactly as described. It was pre-programmed to my VIN, which made installation seamless—just plug it in and go. The truck runs smoothly now, and I didn’t have to deal with any complicated setup or reprogramming. Definitely a solid choice if you want a hassle-free replacement.