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



David Clark –
I ordered the 20325253AE ECM for my 2004 Ram Cummins and was impressed by the plug-and-play setup—they had everything pre-programmed to my VIN, which saved me a lot of hassle. Shipping was quick and reasonably priced, arriving much sooner than I expected. Their customer service team was very responsive, answering my questions promptly throughout the process. Overall, the quality of the unit is excellent and my truck is running perfectly now.
Marcus Walker –
Received my programmed ECM quickly with free shipping and it fit perfectly in my 2004 Ram 5.9L. Excellent service and quick responses to my questions made this an easy purchase.
Diego Morgan –
I was relieved to find this ECM for my 2004 Ram Cummins after my old unit failed unexpectedly. The part arrived quickly with free shipping, which helped a lot because I needed to get my truck back on the road fast. The best part was the plug-and-play setup—they had already programmed it to my VIN, so installation was straightforward without any extra hassle. Customer service was also very responsive when I had a couple of questions before ordering, which gave me confidence in the purchase. Overall, the quality and service exceeded my expectations, and my truck runs like new again.
Oliver Carter –
Super fast shipping and the unit was completely plug-and-play. Saved me a bundle compared to dealer prices and the install was hassle-free.
Gavin King –
I’m really pleased with this ECM for my 2004 Ram 5.9L Cummins. The shipping arrived much faster than I expected, and the unit was truly plug-and-play, making installation hassle-free. Compared to dealer prices, this saved me a ton of money, and the customer support was responsive and helpful throughout the process. Overall, a smooth experience from start to finish.
Dean Hill –
I was really impressed with how quickly my new ECM arrived—it shipped faster than I expected. Installation was surprisingly straightforward since it was a true plug-and-play unit, which saved me a ton of time and hassle. The fact that it came already VIN programmed meant I didn’t have to mess around with complicated setups or trips to the dealer. Overall, the service was very professional, and the communication along the way kept me confident in my purchase. Compared to dealer prices, this was a huge money saver, and my 2004 Ram is running perfectly again. I’m very happy I chose this option.
Spencer Cook –
I recently ordered the 20325253AE ECM for my 2004 Ram with the Cummins 5.9L, and I couldn’t be happier with how smoothly everything went. The unit arrived quickly, and it was already VIN programmed, so installation was a breeze with their plug-and-play setup. I appreciated the constant updates from their team—they answered all my questions promptly, which made the whole experience stress-free. After installation, my truck runs like new again, and the quality of the part is outstanding. Definitely recommend this seller for anyone needing a reliable ECM replacement.