Description
2004 RAM Ram Truck (Cummins) 5.9L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 RAM Ram Truck (Cummins) 5.9L 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 Kelly –
I ordered the 15235133AG ECM for my 2004 RAM Cummins and was pleasantly surprised by how quickly it arrived with free shipping. The unit was VIN programmed and ready to install right out of the box, making the swap hassle-free. Their team answered all my questions promptly, which really helped me feel confident in the purchase. Overall, a smooth experience with a quality product that worked perfectly.
Luis Wilson –
Received my ECM quickly with free shipping, and it was already programmed for my 2004 Ram Cummins—plug-and-play setup made installation a breeze!
Benjamin Payne –
The ECM arrived quickly with free shipping and was perfectly programmed for my 2004 Ram Cummins—installation was a breeze. Excellent communication throughout the process made this a hassle-free purchase.
Cameron Lawrence –
The 15235133AG ECM for my 2004 Dodge Ram 5.9L Cummins arrived quickly and was exactly as described. Installation was straightforward—just plug and play—and the engine fired up without any issues. Their team kept me informed throughout the process, which made the whole experience smooth. This purchase saved me a significant amount compared to dealer pricing, and I’m very satisfied with the professional service.
Mason Miles –
Fast shipping and the unit was truly plug-and-play; saved me a bundle compared to dealer prices. Installation went smoothly, and their communication was spot on throughout.