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
Owen Harrison –
I purchased the 20325233AB ECM for my 2004 RAM Cummins, and the whole process was seamless. The unit arrived quickly with free shipping, which was a nice bonus. What impressed me most was that it came VIN programmed and ready to install—no hassle or extra trips to a shop. Their team answered all my questions promptly, making the experience stress-free.
Nicholas Cook –
I purchased the 20325233AB ECM for my 2004 Ram Cummins and was really impressed by how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. The best part was that it came VIN programmed, so installation was straightforward and it fired up without any issues. I also appreciated the prompt responses to my questions throughout the process.
Benjamin Wilson –
Received my 20325233AB for my ’04 Ram quickly with free shipping, and it arrived perfectly programmed—made the swap hassle-free!
Samuel Torres –
The VIN programmed ECM arrived quickly with free shipping, and it worked perfectly right out of the box—very happy with the seamless experience.
Great communication throughout the process, and the plug-and-play setup made installing this ECM on my 2004 RAM a breeze.
Fast turnaround and the unit was already programmed to my VIN, saving me a ton of hassle—highly recommend their professional service.
Aiden Nichols –
I ordered the 20325233AB ECM for my 2004 Ram with the Cummins 5.9L, and I couldn’t be happier with the whole experience. The unit arrived quickly with free shipping, which was a nice bonus. What really impressed me was their professional programming service — the ECU came perfectly programmed to my VIN, so installation was straightforward and hassle-free. Throughout the process, their team stayed in touch and answered all my questions promptly, which gave me confidence in what I was buying. Since installing the ECM, my truck runs smoother than ever.