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
Victor Phillips –
I ordered the 20325233AN ECM for my 2004 Ram Cummins, and the whole process was straightforward thanks to their professional VIN programming service. The unit arrived quickly with free shipping, which was a nice bonus. Communication was excellent—they kept me informed every step of the way. Installation was plug-and-play, and my truck runs perfectly now.
Henry Sanders –
Fast shipping and the ECU arrived perfectly programmed for my 2004 Ram Cummins—installation was a breeze! The team answered all my questions promptly, making the whole process smooth.
Dylan Peterson –
Fast shipping and the ECU was perfectly programmed for my 2004 Ram Cummins—plug-and-play and no issues at all. Highly recommend their professional service!