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



Mason Little –
I was impressed with how quickly this ECM arrived, especially with the free shipping included. The unit came VIN programmed and was truly plug-and-play, making installation straightforward. The quality feels solid, and my 2004 Cummins is running smoothly again. Customer support was also helpful when I had a couple questions before purchasing.
Shane Nelson –
Fast shipping and the plug-and-play ECM worked perfectly in my 2004 Ram with no hassle—saved me a bundle compared to dealer prices. The whole process was smooth and the communication was spot on.
Austin Perez –
Fast shipping and the ECU was programmed perfectly for my 2004 Cummins—plug-and-play made installation a breeze.
Anthony King –
Super fast shipping and the plug-and-play setup made installation a breeze on my ’04 Ram Cummins. Highly recommend!
Gavin Adams –
I was impressed with how quickly the ECM arrived and that it came fully VIN programmed, making installation straightforward with no extra setup on my part. The free shipping was a nice bonus and definitely helped keep the overall cost down. Customer service was very responsive when I had a couple questions before ordering, which gave me confidence in the purchase. So far, everything is running perfectly on my 2004 RAM Cummins.