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
Dylan Bates –
I’m really impressed with how quickly this ECM arrived—it was shipped out faster than I expected. The unit was truly plug-and-play, making the installation smooth and hassle-free. Compared to dealer prices, this saved me a significant amount of money, and the team’s communication throughout the process was clear and professional. Overall, a great experience that I would recommend to anyone needing an ECU upgrade.
Justin Adams –
I purchased the 20325253AJ ECM for my 2004 RAM 5.9L Cummins, and I’m very impressed with the quality and performance. The unit came fully VIN programmed, which made installation straightforward and hassle-free. Shipping was surprisingly fast and affordable, and the team was great about keeping me updated throughout the process. Definitely a reliable option for anyone needing a replacement ECM.
Lucas Evans –
Fast shipping and a plug-and-play unit made installation effortless, saving me a bundle compared to dealer prices. The communication was clear and the whole process went smoothly.
Hunter Graham –
I was really impressed with how quickly this ECM arrived, and it came with free shipping which was a nice bonus. The unit was VIN programmed and ready to plug-and-play right out of the box, so installation was straightforward without any hassle. The communication from the seller was excellent—they kept me informed throughout the process and answered all my questions promptly. Overall, the quality of the product and service exceeded my expectations.
Tyler Anderson –
Received my ECM quickly with free shipping, and it worked perfectly right out of the box—highly recommend their plug-and-play service.
Great communication throughout the process and they programmed the ECU specifically for my VIN, making installation a breeze.
Fast turnaround and the updated ECM runs smoothly; they answered all my questions promptly, which gave me confidence in my purchase.
Isaac Richardson –
Fast shipping and the ECU arrived perfectly programmed for my 2004 Ram 5.9L, made the swap seamless. Communication was spot on and they answered all my questions right away.