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
Gavin Ward –
I’m really impressed with how quickly the ECM arrived—shipping was faster than I expected. The unit was truly plug-and-play, which made installation straightforward and hassle-free. Compared to dealer prices, this service saved me a significant amount of money, and their communication throughout the process was prompt and professional. Overall, a great experience that I’d recommend to any Ram owner.
Bruce Torres –
Shipping arrived super fast, the ECU was truly plug-and-play, and I saved big bucks compared to dealer prices—installation went smoothly thanks to their clear communication.
Travis Douglas –
I purchased the 4937150 ECM for my 2004 RAM with the 5.9L Cummins, and I’m really impressed with the whole process. The unit came VIN programmed and ready to install, which saved me a lot of hassle. Their communication was spot on too—they answered all my questions promptly and kept me updated throughout. Shipping was free and surprisingly fast, so I had the truck back on the road in no time.
Carlos Burton –
Got my ECM quickly with free shipping, and it was already VIN programmed—plug-and-play made the install hassle-free!
Dylan Hudson –
I was really impressed with how quickly the ECM arrived after I placed my order. The unit came fully programmed and was truly plug-and-play, so getting it installed didn’t take more than a couple of hours. Compared to the dealer pricing, I saved a ton of money, which was a huge relief. The communication throughout the process was clear and professional, making me feel confident about my purchase. Overall, this was a smooth experience, and my 2004 RAM is running perfectly again.
Kevin Walker –
Super fast turnaround and the plug-and-play setup took all the hassle out of installing my new ECU. Highly recommend!