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



Cameron Wallace –
Fast shipping and the VIN programming was flawless—my 2004 Cummins runs like new again. Excellent service and quick responses to every question.
Adam Kelly –
I was really impressed with the service from start to finish. The ECM for my 2004 Ram Cummins arrived quickly, and it was already VIN programmed, so installation was a breeze. The team answered all my questions promptly and kept me updated throughout the process, which gave me peace of mind. Shipping was free and arrived faster than I expected, which was a pleasant surprise. Overall, this was a smooth experience, and my truck runs flawlessly now. Highly recommend if you need a reliable ECM solution.
Chris Smith –
I ordered the 20325251AJ ECM for my 2004 Cummins Ram Truck and was impressed with how quickly it arrived, especially with the free shipping they offered. The unit came VIN programmed and ready to install, which made the swap seamless. Their team was also great at answering my questions promptly, making the whole process much less stressful. Highly recommend for anyone needing a reliable replacement ECU.
Cameron Rogers –
Shipping was super fast and the unit was truly plug-and-play. This saved me a ton compared to dealer prices and installation went without a hitch.