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




Shane Reynolds –
I was a bit nervous ordering an ECM for my 2004 Ram Cummins, but this unit arrived exactly as described and was already VIN programmed, so installation was straightforward. The seller kept me in the loop the whole time, answering my questions promptly and making sure I understood the process. Shipping was free and arrived quicker than I expected, which was a huge relief since I needed my truck back on the road fast. After swapping the unit in, my Ram fired up with no issues and runs better than it has in years. Definitely a trustworthy source for anyone needing a reliable ECM.
Scott Peterson –
I purchased the 20325253AD ECM for my 2004 Ram 5.9L Cummins, and I’m really impressed with how smooth the whole process was. The unit arrived quickly with free shipping, and it was already VIN programmed, so installation was straightforward. I had a few questions before ordering, and their customer service responded promptly, which gave me confidence in the product. Since installing it, my truck runs perfectly, just like new.
Joel Nichols –
Super fast shipping and the ECM arrived perfectly programmed for my 2004 Ram 5.9L—plug-and-play was exactly as promised.
Mark Tucker –
I was really impressed with the quality of this 2004 RAM ECM. The unit came VIN programmed and ready to install, which saved me a lot of time and hassle. Shipping was free and arrived quicker than I expected. The seller also responded promptly to my questions, making the entire process smooth and worry-free.
Scott Allen –
Fast shipping and the unit was completely plug-and-play. This saved me a ton compared to dealer prices and the installation was hassle-free.
Russell Roberts –
I was really impressed with how smooth the entire process was from start to finish. The ECM arrived quickly and was already VIN programmed, which saved me a ton of time and hassle. The seller kept me updated throughout, answering all my questions promptly and clearly. Installation went flawlessly, and my 2004 Ram’s engine runs like new again. Plus, the shipping cost was very reasonable, making this an even better deal. Definitely a trustworthy source if you need an ECU replacement.
Mark Lawrence –
Fast shipping and the pre-programmed ECU fit perfectly in my 2004 Ram 5.9L Cummins with zero hassle—highly recommend!