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



Dean Howard –
Super fast shipping and the ECU came perfectly programmed—plug-and-play was exactly as promised!
Jeremy Morris –
I ordered the 15235133AJ ECM for my 2004 RAM with the 5.9L Cummins, and everything arrived quickly with free shipping, which was a nice bonus. The unit came VIN programmed and ready to install, making the swap hassle-free. Their team was very responsive when I had a few questions, and the whole process went smoothly from start to finish. The truck is running perfectly now with no issues at all.
Patrick Palmer –
Arrived quickly with free shipping and was perfectly programmed for my 2004 Ram 5.9L—super easy plug-and-play installation.
Trevor Perez –
Fast shipping and the unit was truly plug-and-play; saved me a ton versus dealer prices. Installation went smoothly thanks to clear communication from the team.