Description
2011 Chevrolet Silverado 3500 6.6L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2011 Chevrolet Silverado 3500 6.6L AT gas models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with our cloning service.
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
Important Note
Some vehicles with IMMO or PATS require key programming after installation. This is normal.
For a 100% plug-and-play solution, We recommend using our full cloning service. We transfer all security data to the replacement unit.
A prepaid shipping label will be emailed to you. Allow you mail in your original computer to us to do full cloning.
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
Jordan Roberts –
Installed this ECM in minutes and my Silverado runs like new again—super smooth experience and quick delivery!
Exactly what I needed, came VIN programmed and ready to go—no hassle, just plug it in and drive.
Great quality and fast shipping! This ECU was a perfect fit and worked flawlessly right out of the box.
Had it in my truck the same day it arrived, zero issues and noticeable performance improvement.
Very impressed with the seamless swap and how quickly my truck fired up after installation.