Description
2004 Chevrolet Silverado 6.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Chevrolet Silverado 6.6L models.
Each unit is VIN-programmed, updated, and fully tested.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Anthony Ramirez –
The ECM arrived quickly with free shipping and was perfectly programmed for my Silverado—installation was a breeze.
Excellent communication throughout the process and the plug-and-play setup saved me a ton of hassle.
Great quality and fast turnaround; their programming service got my 6.6L running like new again.
Shipped super fast with reasonable rates, and the unit worked flawlessly right out of the box.
They answered all my questions promptly and delivered a professionally programmed ECM that fit perfectly.
Jordan Perez –
I was really impressed with how quickly the ECM arrived after I placed my order. The unit was completely plug-and-play, making the installation process smooth and hassle-free. This saved me a significant amount compared to dealer prices, and the communication from the seller was clear and professional throughout. Overall, a great experience that I would recommend to anyone needing an updated ECU for their Silverado.
Scott Moore –
Fast shipping and plug-and-play install made this swap a breeze, saving me big bucks versus the dealer price. Great communication and a quick turnaround really impressed me.