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
Steven Peterson –
I was impressed with how quickly this 2004 Silverado ECM arrived, especially with the free shipping option. The unit came VIN programmed and ready to install, which saved me a ton of time and hassle. The seller also responded promptly to my questions, keeping me in the loop throughout the process. Overall, a smooth transaction and a reliable product that got my truck back on the road.
Neil Payne –
I was really impressed with how quickly the ECM arrived after I ordered—it definitely sped up getting my Silverado back on the road. The unit was plug-and-play, which made installation straightforward even for someone not super experienced with vehicle electronics. Compared to dealer prices, this service saved me a ton of money, and the communication throughout the process was clear and helpful. Overall, a hassle-free experience that I would recommend to anyone needing a replacement ECU.
Ryan Parker –
The fast shipping and plug-and-play setup made installation a breeze, and this ECM saved me a ton compared to dealer prices. Great service and quick turnaround!
Shane Parker –
Shipped quickly with free delivery, and the ECU was programmed perfectly for my Silverado—plug-and-play setup made installation a breeze.
Eric Hayes –
I was pretty nervous replacing the ECM on my 2004 Silverado, but this unit worked flawlessly right out of the box. The shipping arrived way quicker than I expected, which was a huge relief. Installation was straightforward since it was fully programmed to my VIN—just plug and play. Honestly, buying this saved me a bundle compared to the dealer’s price, and the communication from the seller was top-notch. This made what could have been a stressful repair go smoothly and without any surprises.