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
Jordan Scott –
I purchased the 20325253AI ECM for my 2004 Ram 5.9L Cummins and was really impressed by how quickly it arrived with free shipping. The unit was VIN programmed and ready to install, which made the whole process super straightforward. Their customer service answered all my questions promptly and kept me informed throughout. Overall, a great experience and my truck is running like new again.
Jorge Miller –
I was really impressed with the quality of this ECM for my 2004 RAM 5.9L Cummins. The unit arrived quickly with free shipping, which was a nice bonus. The plug-and-play setup made installation straightforward, and it was already VIN programmed, so I didn’t have to worry about any additional steps. Overall, it runs flawlessly and exceeded my expectations.
Chase Morris –
I was really impressed with how smoothly everything went ordering this ECM for my 2004 Ram Cummins. The unit arrived quickly with free shipping, which was a nice bonus since I didn’t have to worry about extra fees. What stood out was the professional VIN programming they did before shipping, so it was basically plug-and-play once I got it. The truck fired right up with no issues, and I could tell the quality of the repair was top-notch. Definitely a hassle-free experience from start to finish.
Scott Parker –
I was really impressed with how smoothly everything went from start to finish. The ECM arrived quickly thanks to their very reasonable shipping costs, which was a relief since I needed it urgently. What stood out most was the plug-and-play setup—it literally took minutes to get it installed and running perfectly in my 2004 Ram with the 5.9L Cummins engine. The engine runs smoother than ever, and I didn’t have to worry about any complicated programming on my end. Overall, great product and service that I would recommend to anyone facing ECM issues.
Chase Chapman –
The ECU arrived quickly with free shipping and was already VIN programmed, making installation a breeze. Excellent communication throughout the process too!
Brian Payne –
Arrived quickly with free shipping and was perfectly programmed for my 2004 Ram 5.9L—worked like a charm right out of the box!