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: 647-247-8555





Russell Scott –
The ECM arrived fast with free shipping and was fully plug-and-play, making installation a breeze. Great quality and flawless performance so far!
Jeremy Payne –
Super fast shipping and the unit was ready to go right out of the box. Saved me a ton compared to dealer prices and installation was a breeze.
Neil Rogers –
I purchased the 20325231AI ECM for my 2004 Ram 5.9L Cummins, and it arrived quickly with free shipping, which was a nice bonus. The unit was VIN programmed and ready to install right out of the box—no extra hassle on my end. Their team was very responsive, answering my questions promptly and making the whole process straightforward. Highly recommend this product and service for anyone needing a reliable ECM replacement.