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
Caleb James –
This ECM arrived quickly with free shipping and was perfectly programmed for my 2004 RAM—plug-and-play made installation a breeze. The seller kept me informed every step of the way, which I really appreciated.
Jose Lawrence –
Fantastic quality ECM for my 2004 RAM Cummins, arrived quickly with free shipping and was already VIN programmed for a seamless install.
Great experience all around—the team answered all my questions promptly and the plug-and-play setup made replacing my PCM effortless.
The updated 20325251AJ ECM worked perfectly, and they shipped it out super fast with very reasonable shipping costs.
Really impressed by the professional programming service; the unit was ready to go right out of the box with no hassle at all.
Excellent communication throughout the process, and the repair quality on this ECU is top-notch—highly recommend!
Shane Miller –
The 20325251AJ ECM for my 2004 RAM Cummins arrived quickly and arrived with free shipping, which was a nice bonus. The unit was already VIN programmed, so installation was straightforward with no extra hassle on my end. The seller’s communication was excellent — they answered all my questions promptly and kept me updated throughout the process. Overall, a smooth experience and my truck runs great now.