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




Matthew Collins –
I ordered the 20325253AL ECM for my 2004 RAM with the 5.9L Cummins, and I couldn’t be happier with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus, and it was already VIN programmed, so installation was straightforward. I had a few questions before buying, and their team responded promptly, making me feel confident about the purchase. Once installed, my truck ran perfectly, with no hiccups or warning lights. Overall, a great experience from start to finish, and I’d definitely recommend this product to anyone in need of a reliable ECM.
Jordan Hill –
Fast shipping and the plug-and-play unit worked perfectly in my 2004 RAM Cummins. Saved me a ton compared to dealer prices and the installation went smoothly.
Max Adams –
I ordered the 20325253AL ECM for my 2004 Cummins Ram, and everything went smoothly from start to finish. The unit arrived quickly with free shipping, which was a nice bonus. Their team also programmed the ECU to my VIN before shipping, so installation was literally plug-and-play. I appreciate how they kept me informed throughout the process, answering all my questions promptly.
Chase Campbell –
Fast shipping and the ECU arrived fully programmed for my 2004 Ram 5.9L—worked perfectly right out of the box!
Nicholas Morris –
I was a bit nervous about ordering a replacement ECM for my 2004 RAM with the Cummins engine, but this unit arrived exactly as described and was VIN programmed, which made installation a breeze. The shipping was surprisingly quick and free, which was a huge plus since I needed my truck back on the road ASAP. I also appreciated how the team stayed in touch, updating me on the status of my order from start to finish. Once installed, the truck fired right up and has been running smoothly ever since. Definitely recommend this product and service for anyone needing a reliable ECM replacement.