Description
2004 Chevrolet Silverado 4.3L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Chevrolet Silverado 4.3L 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
Andrew James –
I was really impressed with how quickly this ECM arrived—it was shipped fast and arrived just as promised. The unit came pre-programmed and was completely plug-and-play, making the installation process smooth and hassle-free. Choosing this over a dealer repair saved me a significant amount of money, and the communication from the seller was clear and professional throughout. Overall, a great experience from start to finish.
Jason Gonzalez –
Fast shipping and the unit was truly plug-and-play. Saved me a bundle compared to dealer prices and installation was a breeze.
Luis Kelly –
The VIN programmed ECM arrived quickly with free shipping and worked perfectly right out of the box. Great communication throughout the entire process.
Austin Lopez –
The 2004 Chevrolet Silverado ECM arrived exactly as described and was already VIN programmed, which made installation straightforward. I appreciated the professional programming service that ensured everything was set up perfectly right out of the box. Shipping was fast and reasonably priced, and the seller kept me updated throughout the process. Overall, a hassle-free experience that got my truck running smoothly again.