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
Justin Adams –
I purchased the 20325253AJ ECM for my 2004 RAM 5.9L Cummins, and I’m very impressed with the quality and performance. The unit came fully VIN programmed, which made installation straightforward and hassle-free. Shipping was surprisingly fast and affordable, and the team was great about keeping me updated throughout the process. Definitely a reliable option for anyone needing a replacement ECM.
Hunter Graham –
I was really impressed with how quickly this ECM arrived, and it came with free shipping which was a nice bonus. The unit was VIN programmed and ready to plug-and-play right out of the box, so installation was straightforward without any hassle. The communication from the seller was excellent—they kept me informed throughout the process and answered all my questions promptly. Overall, the quality of the product and service exceeded my expectations.
Tyler Anderson –
Received my ECM quickly with free shipping, and it worked perfectly right out of the box—highly recommend their plug-and-play service.
Great communication throughout the process and they programmed the ECU specifically for my VIN, making installation a breeze.
Fast turnaround and the updated ECM runs smoothly; they answered all my questions promptly, which gave me confidence in my purchase.
Isaac Richardson –
Fast shipping and the ECU arrived perfectly programmed for my 2004 Ram 5.9L, made the swap seamless. Communication was spot on and they answered all my questions right away.