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
Kevin Burton –
The ECM arrived quickly with free shipping and was perfectly programmed for my 2004 Ram 5.9L, making installation a breeze. Great service and fast turnaround!
Sean Kelly –
I ordered the 20325251AK ECM for my 2004 Ram with the 5.9L Cummins and was really impressed by the plug-and-play setup. The unit arrived quickly, and it was already VIN programmed, so installation was straightforward with no extra hassle. Customer service was excellent, answering all my questions promptly and keeping me informed throughout the process. Shipping was free, which was a nice bonus given the fast turnaround.
Nicholas Ramirez –
The VIN-programmed ECM arrived quickly with free shipping and worked perfectly right out of the box. Great service and hassle-free setup!