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
Owen Adams –
The ECU arrived quickly with free shipping, and the plug-and-play programming was flawless—my truck runs like new!
Anthony Jenkins –
I ordered the 20325231AJ ECM for my 2004 Ram 5.9L Cummins, and it arrived quickly with free shipping, which was a nice bonus. The unit was VIN programmed perfectly, and installation was straightforward thanks to the plug-and-play setup. Customer service was very responsive and answered all my questions promptly, making the whole process smooth and hassle-free. So far, the truck runs great with no issues at all.
Patrick Graham –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2004 RAM Cummins—exactly what I needed. Communication was top-notch, and the whole process was hassle-free.
Max Howard –
I’m really impressed with this ECM for my 2004 RAM Cummins. The shipping arrived faster than I expected, and the unit was truly plug-and-play, making installation straightforward and hassle-free. The best part was the price—getting this online saved me a ton compared to dealer quotes. Their customer communication was clear and professional, which made the whole process smooth from start to finish.
Jorge Graham –
Fast shipping and this plug-and-play ECM fit perfectly in my 2004 Ram 5.9L; saved me a bundle compared to dealer prices. Installation was smooth and the communication was spot-on.
Eric Scott –
I’m really impressed with the whole experience from start to finish. The 20325231AJ ECM arrived quicker than I expected, which was a huge relief since I needed my 2004 RAM back on the road fast. Installation was incredibly straightforward — it was basically plug-and-play, no extra programming needed once it showed up VIN programmed. Compared to the dealer’s quote, I saved a ton of money and didn’t have to wait weeks. The seller kept me updated throughout, making the whole process feel professional and hassle-free. Definitely a great find for anyone needing a reliable ECM replacement.