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
Adrian Anderson –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2004 RAM. Setup was hassle-free and the communication from the seller was spot on.
Jorge Kelly –
I purchased the 20325251AI ECM for my 2004 RAM with the Cummins 5.9L, and it arrived quickly with free shipping, which was a nice bonus. The unit was VIN programmed perfectly and worked right out of the box without any hassle. The seller kept me informed throughout the process, answering my questions promptly and professionally. Overall, a smooth experience with top-notch quality.
Blake Clark –
Received my programmed ECM for my 2004 Ram truck quickly with free shipping, and it fit perfectly—saved me a ton of hassle. The team was super helpful answering my questions along the way.