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



Jorge Webb –
I was really impressed with how quickly this ECM arrived after ordering. The unit was fully programmed to my VIN and it was literally plug-and-play, making the installation straightforward and hassle-free. Choosing this service saved me a significant amount compared to dealer prices, and the staff kept me informed throughout the entire process. Overall, a smooth experience from start to finish.
Tyler Burton –
I was really impressed with how quickly the ECM arrived after I ordered it—shipping was much faster than I expected. When it came time to install, the unit was truly plug-and-play, which made the whole process smooth and hassle-free. I had initially been worried about the cost of going through the dealer, but this service saved me a significant amount of money while still providing a VIN-programmed, updated module. The communication from the seller was clear and professional, answering all my questions promptly. Overall, this was a great experience, and my RAM is running like new again thanks to this replacement ECM.
Benjamin Cox –
Received my programmed ECM for the 2004 Ram quickly with free shipping, and it was truly plug-and-play—couldn’t be happier with the hassle-free setup.
Dean Palmer –
I ordered the 20325253AH ECM for my 2004 Ram with the 5.9L Cummins, and I couldn’t be happier with the experience. The unit arrived quickly with free shipping, which was a nice bonus. What impressed me most was the plug-and-play programming—they had it perfectly set up for my VIN before it got to me, so installation was a breeze. The truck fired right up, and performance has been solid ever since. The support team was also responsive and answered all my questions promptly, which gave me confidence throughout the process. Highly recommend for anyone needing a reliable ECM replacement.
Ian Moore –
I had some trouble with my 2004 RAM’s ECM and was worried about finding a reliable replacement. This unit arrived programmed to my VIN exactly as promised, which saved me a lot of hassle. The shipping was surprisingly quick and free, so I had it in hand within just a few days. Installation went smoothly since it was truly plug-and-play, and my truck fired right up without any issues. The team kept me in the loop the entire time, answering my questions promptly and professionally. Overall, a great experience that got my truck back on the road faster than I expected.
Caleb Green –
Fast shipping and the plug-and-play ECU worked perfectly on my 2004 RAM 5.9L. Saved me a ton compared to dealer prices and installation was seamless.
Zachary Cook –
I purchased the 2004 RAM 5.9L ECM with VIN programming and was impressed by how seamless the whole process was. The unit arrived quickly with free shipping, and the plug-and-play setup made installation straightforward without any headaches. The team also communicated promptly when I had questions, which gave me confidence throughout the purchase. Overall, this ECM worked perfectly and has my truck running like new again.