Description
2004 Chevrolet Silverado 6.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Chevrolet Silverado 6.0L 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



Adam Phillips –
The ECM arrived quickly with free shipping, and the plug-and-play setup had my Silverado running like new in no time. Excellent communication throughout the entire process.
Aaron Hill –
I was really impressed with how quickly the 2004 Silverado ECM arrived—shipping was definitely faster than I expected. The unit was completely plug-and-play, which made installation much easier than I anticipated. The communication throughout the process was clear and professional, and overall, this saved me a ton compared to the dealer’s pricing. Everything works perfectly now, and I couldn’t be happier with the smooth experience.
Kevin Green –
Fast shipping and a plug-and-play unit made installation a breeze, plus I saved a ton over dealer prices. Great service and quick turnaround all around.