Description
2020 Chevrolet Silverado 6.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2020 Chevrolet Silverado 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:
Complete communication & CAN-bus verification
Sensor input/output and signal integrity checks
Injector & ignition pulse simulation
Power, ground, and load-circuit analysis
Flash memory integrity and checksum validation
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 with IMMO or PATS may require key programming after installation. This is normal.
For a 100% plug-and-play solution with no relearns, your original ECU must be sent in for cloning. We transfer all security data to the replacement unit.
👉Add the cloning service as a bundle at checkout — $200 CAD / $140 USD
A prepaid shipping label will be emailed to you.
If cloning is not selected, the ECU will be VIN programmed, and a key relearn will be required after installation.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Anthony Edwards –
Arrived quickly and worked perfectly right out of the box—had my Silverado running smoothly in no time. Absolutely hassle-free!
Really impressed with how easy this ECM was to install; no programming needed and the truck fired up instantly. Great buy!
Fast shipping and flawless functionality. Plugging this in was a breeze, and my Silverado runs like new again.
This ECM was exactly as advertised, preprogrammed for my VIN and ready to go. Saved me a ton of time and headaches!
Super reliable unit, arrived on time and fit perfectly with no extra work. Definitely recommend for Silverado owners needing a quick fix.
Ryan Murphy –
I was a bit nervous about swapping out the ECM on my 2020 Silverado, but this unit made the process so much easier than I expected. It came pre-programmed to my VIN, which saved me a ton of setup time, and installation was truly plug-and-play—no headaches at all. After putting it in, my truck fired right up and runs perfectly, just like it did before the old module started acting up. Shipping was surprisingly quick too, arriving well-packaged and on schedule. Overall, this product gave me peace of mind and restored my Silverado’s performance without any hassle. I’d definitely recommend it to anyone needing a reliable ECM replacement.
Liam Howard –
The ECM arrived quickly and was exactly as described, already programmed to my VIN which made installation seamless. I appreciated how straightforward the plug-and-play setup was—no complicated steps or extra tuning needed. After swapping it out, my Silverado runs perfectly smooth, just like it did from the factory. Definitely a reliable part that saved me a ton of time and hassle.
I was a bit nervous about replacing the ECU myself, but this unit made the process incredibly easy. It was delivered fast and came pre-programmed to my truck’s VIN, so I didn’t have to mess around with coding or additional tools. Installation took less than an hour, and the truck fired up without a hitch, with everything functioning as expected. It’s clear this is a quality product designed for a hassle-free experience.
This replacement ECM for my 2020 Silverado was a fantastic purchase. The fact that it came VIN programmed saved me a lot of headaches and extra trips to the dealership. The unit fit perfectly and worked right