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




Joel Chapman –
I was really impressed with how quickly this ECM arrived after ordering—fast shipping made a big difference. The unit was truly plug-and-play, fitting perfectly into my 2004 RAM Cummins without any hassle. Installation went smoothly, and the VIN programming was spot on right out of the box. Choosing this over dealer service saved me a significant amount of money, and their clear communication throughout the process gave me confidence in my purchase.
Frank Wilson –
I purchased the 20325231AF ECM for my 2004 RAM Cummins and was really impressed with the entire process. The unit came VIN programmed and was essentially plug-and-play, which saved me a lot of hassle. Shipping was surprisingly quick and affordable, arriving well within the expected timeframe. The truck fired right up with no issues, and overall the quality exceeded my expectations.
Dylan Walker –
Super fast turnaround and the VIN programmed perfectly for my 2004 RAM Cummins. Shipping was free, which was a great bonus!
Jonah Bates –
The ECM arrived quickly and was truly plug-and-play, saving me a ton compared to dealer prices. Installation was smooth, and their communication was spot on.