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




Elijah Allen –
I had a great experience ordering the ECM for my 2004 RAM Cummins. The unit arrived quickly with free shipping, which was a nice bonus. The best part was that it came VIN programmed, so installation was straightforward with no additional setup needed. Communication was also top-notch—they kept me informed every step of the way.
Luis Evans –
Great experience from start to finish—fast shipping and the ECU was perfectly programmed for my 2004 RAM. They answered all my questions quickly, which made the process smooth.
Ian Chapman –
I had a great experience ordering the 20325253AO ECM for my 2004 RAM Cummins. The unit arrived quickly thanks to their reasonable shipping rates, which was a relief since I needed my truck back on the road fast. What impressed me the most was that it came VIN programmed and ready to install, so I didn’t have to deal with any complicated setup. The performance feels just like new, and I noticed smoother idling right away. Overall, the hassle-free process and quality of the product exceeded my expectations.
Harrison Torres –
The ECU arrived quickly and was truly plug-and-play, saving me a ton compared to dealer prices. Installation was a breeze and the customer service was top notch.
Owen Gonzalez –
I was really impressed with how smoothly everything went from start to finish. The 2004 RAM ECM arrived quickly, and it was already VIN programmed which saved me a ton of time and hassle. The shipping was free, which was a nice bonus on top of the great price. Customer service kept me informed every step of the way, answering my questions promptly and clearly. The installation went without a hitch, and my truck runs like new again. Definitely a reliable source for ECM replacements.