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 –
I was really impressed with how quickly the ECU arrived—shipping was faster than I expected. Installing the 20325233AN unit on my 2004 RAM Cummins was straightforward since it was completely plug-and-play, which saved me a lot of hassle. The best part was how much money I saved compared to the dealer quotes, which were astronomical. The team was also great about communicating and confirming the VIN programming before sending it out. Overall, this service made what could have been a stressful repair totally smooth and affordable. Highly recommend for anyone needing a reliable ECM replacement.
Mark Carter –
I’m really impressed with this ECM for my 2004 RAM Cummins. The shipping was surprisingly quick, and the unit arrived ready to go—just plugged it in with no issues. Installation went smoothly, and the VIN programming was spot on. This saved me a ton compared to dealership prices, plus the communication throughout the process was clear and professional.
Caleb Edwards –
This ECM arrived quickly with free shipping and was perfectly programmed for my ’04 Ram, making installation a breeze. Communication was top-notch throughout the process.
Nicholas Murray –
I was a bit nervous ordering an ECM online, but this one arrived exactly as described and was already VIN programmed, so installation was a breeze. The team provided excellent communication throughout the process, answering my questions promptly and making sure I knew what to expect. Shipping was surprisingly fast and free, which was a great bonus. Once installed, my 2004 Ram’s engine runs smoother than ever, and I haven’t had any issues since. Overall, a solid experience from start to finish.
Isaac Murphy –
I ordered the 20325233AN ECM for my 2004 Ram Cummins and was really impressed with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. What stood out the most was their professional programming service—my truck started right up with no issues, exactly as promised. I also appreciated how they kept me in the loop throughout the entire process, answering my questions promptly. Overall, this was a hassle-free experience, and the ECM works perfectly.
Dominic Gonzalez –
Fast shipping and the plug-and-play setup saved me a bundle compared to dealer prices—installation was a breeze and the service was top-notch.
John Clark –
I was really impressed with how smoothly this ECM arrived—shipping was free and surprisingly quick. The unit came VIN programmed, so installation was truly plug-and-play with no extra hassle. The quality of the part feels top-notch, and my truck is running better than ever. Their team also answered my questions promptly, which made the whole experience stress-free.