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
Andrew Mitchell –
I was really impressed with how quickly this ECM arrived and the fact that it came VIN programmed, which saved me a ton of hassle. The team was very responsive and answered all my questions promptly, making the whole process smooth and stress-free. Shipping was free and fast, which was a great bonus. Once installed, my 2004 Ram’s performance felt spot on, like it was fresh from the factory. Definitely a reliable purchase for anyone needing a quality replacement.
Noah Roberts –
Fast shipping and a plug-and-play unit made installation a breeze. Huge savings compared to dealer prices—highly recommended!
Elliot Brooks –
I was really impressed with how quickly the ECU arrived after I placed my order. The unit was pre-programmed for my 2004 RAM 5.9L and was truly plug-and-play, which made installation straightforward. The communication from the seller was clear and professional throughout the process. Choosing this service saved me a significant amount compared to dealer prices, and everything has been running perfectly since installation.
Tyler Richardson –
I ordered the 3957300 ECM for my 2004 Ram Cummins and was really impressed with how smooth the entire process was. The unit arrived quickly with free shipping, which was a great bonus. It was already VIN programmed, so installation was straightforward and hassle-free. Customer service was also very responsive when I had a couple of questions before ordering, making me feel confident in my purchase.
Shane Marshall –
Great product and the plug-and-play setup made installation a breeze, plus the free shipping was a nice bonus. Highly recommend!
Isaac Howard –
I was really impressed with the service I received for the 2004 RAM 5.9L ECM. The unit arrived quickly with free shipping, which was a nice bonus. What stood out most was the plug-and-play setup—they had it programmed to my VIN before sending it out, so installation was smooth and straightforward. The truck runs perfectly now, and I didn’t have to worry about any complicated programming on my end. Overall, a hassle-free experience and a quality product that I’d definitely recommend.