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



Keith Wallace –
Fast shipping and the plug-and-play unit worked perfectly, saving me a bundle compared to dealer prices. Installation was straightforward and the customer support was spot on.
Henry Poole –
I ordered the 20325253AM ECM for my 2004 RAM 5.9L Cummins and was really impressed with the plug-and-play setup. The unit arrived quickly with free shipping, which was a nice bonus. They had my ECU programmed specifically for my VIN, so installation was seamless, and my truck runs better than ever. The entire process was straightforward and hassle-free.
Steven Kelly –
The ECM arrived quickly with free shipping, and the plug-and-play setup made installation a breeze. Great service and excellent communication throughout!
Grant Nelson –
The ECM arrived quickly with free shipping, and the plug-and-play programming saved me a ton of hassle—perfect fit for my 2004 RAM.
Jason Carter –
I ordered the 20325253AM ECM for my 2004 RAM with the 5.9L Cummins, and the whole process was seamless. The unit arrived quickly with free shipping, which was a nice bonus. They did the VIN programming for me, so it was truly plug-and-play—just swapped it out and my truck fired right up with no issues. Their team was also very responsive when I had a couple of questions before ordering, making the experience stress-free.
Allan Miles –
I ordered the 20325253AM ECM for my 2004 Ram with the 5.9L Cummins, and I’m really impressed with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice surprise. They also offer professional VIN programming, so I didn’t have to worry about any complicated setup. After installation, my truck runs like new again, with no hiccups or error codes. I appreciate how the team kept me in the loop throughout the process—definitely a trustworthy seller I’d recommend.