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




Mark Morris –
I ordered the 20325253AJ ECM for my 2004 RAM with the 5.9L Cummins, and I’m really impressed with how straightforward the whole process was. The unit arrived quickly with free shipping, which was a nice bonus. They also handled the VIN programming professionally, so it was essentially a plug-and-play swap. The truck fired right up with no issues, and the communication throughout the order was top-notch—I felt informed every step of the way.
Mason Ramirez –
This ECM arrived quickly with free shipping and was perfectly programmed for my 2004 RAM Cummins—plug-and-play setup made installation a breeze.
Noah Evans –
I’m really impressed with this ECM for my 2004 Ram 5.9L Cummins. The shipping arrived quickly, and the unit was truly plug-and-play, making installation stress-free. The communication from the seller was clear and professional throughout the process. Best of all, this service saved me a significant amount compared to what the dealer quoted.
Colin Hall –
Shipping was super fast and the unit was truly plug-and-play. This saved me a bundle compared to dealer prices, and the whole process was smooth from start to finish.