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
Spencer Edwards –
The VIN programmed ECM arrived quickly with free shipping, and it worked perfectly right out of the box. Excellent communication throughout the process made this an easy purchase.
Hunter Miles –
Fast shipping and a true plug-and-play unit—saved me a bundle compared to dealer prices. Installation was seamless, and the customer support made the whole process easy.
Matthew Anderson –
I needed a replacement ECM for my 2004 RAM with the 5.9L Cummins, and this unit was exactly what I was looking for. The best part was that it came VIN programmed and ready to install, which saved me a ton of time and hassle. Shipping was fast and reasonably priced, arriving well within the estimated window. The quality of the part feels top-notch, and after installation, my truck runs like new again. The team was also very responsive when I had a couple of questions before ordering, which made the whole process smooth and stress-free.
Chris Gonzalez –
I recently purchased the 3957300 ECM for my 2004 RAM Cummins, and I’m very impressed with the quality and performance. The unit arrived quickly with free shipping, which was a great bonus. They also offered professional VIN programming, so it was ready to go right out of the box, saving me a lot of hassle. Communication was spot on too—I got prompt updates and answers to all my questions throughout the process.
Chase Brooks –
I was really impressed with how smoothly the whole process went. The ECM arrived quickly with free shipping, which was a nice surprise. The unit was VIN programmed perfectly, so installation was basically plug-and-play with no hiccups. I had a few questions about compatibility, and their customer service responded promptly and clearly, which gave me confidence in my purchase. My Ram 2500 is running like new again, and I couldn’t be happier with the quality and attention to detail.
Trevor Johnson –
Super fast shipping and the ECU came fully programmed and ready to install—saved me a ton of hassle. Communication was great too, they answered all my questions right away.