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
Connor Edwards –
I was really impressed with how quickly the ECM arrived after I placed my order—much faster than I expected. Installing it was a breeze since the unit came fully programmed and plug-and-play, which saved me a lot of headaches. I had been dreading an expensive trip to the dealer, but this solution ended up being way more affordable. The communication from the seller was very clear and helpful throughout the process, making me feel confident about the purchase. After installation, my Silverado has been running perfectly with no issues at all. Overall, this service was a great find and definitely worth it.
Paul Peterson –
Product arrived quickly with free shipping and was already VIN programmed—plug-and-play made installation a breeze.
Fast turnaround and the team answered all my questions promptly, making the whole process smooth and hassle-free.
The ECU was perfectly programmed for my Silverado and shipping was surprisingly affordable, definitely worth it.
Excellent communication throughout, and the part worked flawlessly right out of the box with no additional setup needed.
Super quick delivery and the professional programming saved me a ton of time—highly recommend for anyone needing this part.
Isaac Carter –
I was really impressed with how quickly this ECM arrived—shipping was faster than I expected. The unit was completely plug-and-play, making installation straightforward without any hassle. Compared to dealer prices, this service saved me a significant amount of money, and their communication throughout the process was clear and helpful. Overall, a great experience from start to finish.
Robert Adams –
The unit arrived quickly and was truly plug-and-play, saving me a bundle compared to dealer prices. Installation was straightforward, and communication with the team was excellent.