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 for a true plug-and-play installation with our cloning service.
Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
Every ECU is inspected, refreshed, and verified through advanced diagnostic tools. Testing includes:
Complete communication & CAN-bus verification
Sensor input/output and signal integrity checks
Injector & ignition pulse simulation
Power, ground, and load-circuit analysis
Flash memory integrity and checksum validation
Thermal and voltage-stress testing to confirm reliability
Important Note
Some vehicles with IMMO or PATS require key programming after installation. This is normal.
For a 100% plug-and-play solution, we recommend using our full cloning service. We transfer all security data to the replacement unit.
A prepaid shipping label will be emailed to you. Allow you to mail in your original computer to us for full cloning.
If cloning is not selected, the ECU will be VIN programmed, and a key relearn will be required after installation.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Elliot Rogers –
I ordered the 20325233AC ECM for my 2004 RAM Cummins and was impressed with how quickly it arrived thanks to their free shipping option. The unit was already VIN programmed, so installation was straightforward, saving me a lot of hassle. Customer support was very responsive and answered all my questions before purchase, which gave me confidence in the product. Overall, the repair quality seems top-notch and my truck runs perfectly now.
Connor Webb –
I was a bit nervous about ordering an ECM online for my 2004 Ram with the Cummins engine, but this product exceeded my expectations. The unit came already VIN programmed, which made installation a breeze—just plug and play. Shipping was surprisingly fast and didn’t cost an arm and a leg, which I really appreciated. I also reached out with a few questions before ordering, and their customer service was quick to respond and very helpful. After installing it, my truck runs smoothly again with no error codes, exactly what I needed.
Neil James –
I was really impressed with how smoothly everything went with this ECM replacement for my 2004 RAM 5.9L Cummins. The unit came VIN programmed and ready to install, which saved me so much hassle compared to other options I looked at. Shipping was fast and reasonably priced, arriving well within the expected timeframe. I also appreciated the clear communication from the seller—they answered all my questions promptly and made sure I knew what to expect throughout the process. Since swapping it in, my truck has been running perfectly again, just like brand new.
Luis Nichols –
The ECU arrived quickly with free shipping, and the plug-and-play setup made installation a breeze—highly recommend!
Oliver Cox –
The ECM arrived quickly with free shipping and was perfectly programmed for my 2004 RAM—easy plug-and-play setup made installation a breeze.
Excellent communication throughout the process, and the turn-around time was impressively fast, highly recommend their professional programming service.
Shipped fast with reasonable cost, and the updated ECU worked flawlessly right out of the box on my Cummins.
Great quality and hassle-free VIN programming, plus they answered all my questions promptly which made me feel confident in my purchase.
This PCM fit my truck exactly as described, and their quick response to my inquiries really stood out—definitely a five-star experience.
Steven Hudson –
I purchased the 20325233AC ECM for my 2004 RAM Cummins, and I’m really impressed with the professional programming service they provided. The unit arrived VIN programmed and ready to install, which saved me a lot of hassle. Shipping was very reasonable and the entire process was smooth from start to finish. They also responded quickly when I had questions, making the experience stress-free.
Zachary James –
I was a bit nervous ordering an ECM online, but this 20325233AC unit arrived quickly and was already programmed to my VIN, making installation a breeze. The plug-and-play setup saved me a ton of time, and my 2004 RAM 5.9L Cummins fired right up without any issues. Customer service was top-notch too—they kept me informed every step of the way and answered all my questions promptly. The free shipping was a nice bonus, especially for such a heavy part. Overall, a smooth experience and a solid product that works exactly as promised.
Dominic Burton –
I was a bit nervous ordering an ECM online, but this one arrived quickly with free shipping and was exactly as described. The fact that it came VIN programmed saved me a ton of hassle since it was basically plug-and-play. After installation, my 2004 Ram with the Cummins 5.9L fired right up and runs flawlessly. The quality of the unit is top-notch, and the seller kept me informed throughout the entire process, answering all my questions promptly. Overall, a smooth experience from start to finish.