Description
2020 Chevrolet Silverado 5.3L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2020 Chevrolet Silverado 5.3L 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
Eric Mitchell –
Installed this ECM in my 2020 Silverado with no issues at all. The unit arrived quickly and was already programmed to my VIN, which saved me a ton of time and hassle. Everything plugged in perfectly and the engine runs smoother than before. Really impressed with how straightforward the whole process was.
Cameron Roberts –
The VIN-programmed ECU fit perfectly and installation was a breeze—had my Silverado running like new in no time. Super fast delivery and solid support made the whole process smooth.
Aaron Taylor –
I recently had to replace the ECM on my 2020 Silverado 5.3L, and this VIN-programmed unit was exactly what I needed. The installation was straightforward—truly plug and play with no extra programming on my end, which saved me a ton of time and hassle. Shipping was quicker than I expected, arriving well-packaged and ready to go. After swapping it out, my truck fired up smoothly and runs just like new. Very happy with the quality and service; I’d definitely recommend this for anyone needing a reliable ECM replacement.