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
Trevor Nichols –
Exactly what I needed for my ’04 Cummins, arrived fast with free shipping and worked perfectly right out of the box. The plug-and-play setup saved me a ton of hassle!
Logan Roberts –
I recently purchased the 20325251AL ECM for my 2004 Ram Cummins, and I couldn’t be happier with the service. The unit arrived quickly with free shipping, which was a nice bonus. What impressed me most was how well the team communicated throughout the entire process—they kept me informed every step of the way and answered all my questions promptly. Installation was straightforward thanks to the VIN programmed setup, so it was truly plug-and-play. Since swapping out the ECM, my truck runs smoother and more efficiently than before. Overall, a great experience from start to finish.
Jonah Green –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2004 Ram 5.9L—couldn’t ask for a smoother install. The team kept me informed every step of the way, which made the whole process stress-free.
Grant Cook –
I ordered the 20325251AL ECM for my 2004 RAM Cummins, and the whole process was smooth and hassle-free. The unit arrived quickly with free shipping, which was a pleasant surprise. They took care of the VIN programming, so it was truly plug-and-play when it arrived. Communication was great too—they kept me informed every step of the way, making the purchase very reassuring.