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




Jordan Ward –
I purchased the 15235133AH ECM for my 2004 Ram Cummins and was very impressed with the plug-and-play setup. They had the unit VIN programmed before shipping, which made installation straightforward and hassle-free. Shipping was quick and affordable, and their customer service kept me updated throughout the whole process. The engine is running perfectly now with no issues.
Henry Graham –
Super fast shipping and the ECU arrived perfectly programmed for my 2004 Ram Cummins. Setup was a breeze, couldn’t be happier!
Robert Richardson –
I was really impressed with how quickly this ECM arrived—it was ready to install right out of the box. The unit was plug-and-play, which made the installation process completely hassle-free. Choosing this service saved me a significant amount compared to dealer prices, and their communication throughout was clear and professional. Overall, a smooth experience that I would definitely recommend to anyone needing a replacement ECM for their 2004 RAM Cummins.
Daniel Allen –
The ECU arrived quickly with free shipping and was already VIN programmed for a perfect plug-and-play installation—highly recommend!
Logan Roberts –
Fast shipping and the unit was truly plug-and-play, saving me a ton compared to dealer prices. Installation was a breeze thanks to their clear communication and quick turnaround.
John Reynolds –
I purchased this ECM for my 2004 RAM Cummins and was really impressed with the whole experience. The unit arrived quickly with free shipping, which was a nice bonus. The plug-and-play setup made installation straightforward, and the engine runs perfectly now. Customer service was excellent too, answering all my questions promptly and keeping me in the loop throughout.