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
Ian Chapman –
I recently purchased the 20325233AG ECM for my 2004 Ram 5.9L Cummins, and I couldn’t be happier with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. What really stood out was that the ECU came VIN programmed and ready to install, so I didn’t have to worry about complicated setup or additional costs. The truck fired right up and runs better than it has in years. Customer support kept me in the loop throughout the entire process, answering my questions promptly and putting my mind at ease.
Ethan Bell –
Fast shipping and the VIN programmed ECM fit perfectly in my 2004 Cummins—couldn’t be happier with the plug-and-play setup.
Carlos Gray –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2004 Ram 5.9L—super easy plug-and-play installation. Communication was spot on, and they kept me updated every step of the way.
Liam Ward –
I was really impressed with the service I received when ordering the 20325233AG ECM for my 2004 RAM Cummins. The unit arrived quickly, and what really stood out was how it came VIN programmed and ready to install, which saved me a lot of time and hassle. The shipping was free, which was a nice bonus on top of the reasonable price. Throughout the process, the seller kept me informed about the status of my order, so I always knew what to expect. After installation, my truck started right up with no issues, and the performance feels solid. I’d definitely recommend this seller to anyone needing a reliable replacement ECU.
Neil Roberts –
I ordered the 20325233AG ECM for my 2004 Ram Cummins and was really impressed by how smooth the whole process was. The ECU came VIN programmed and ready to install, which saved me a ton of time and hassle. Shipping was free and arrived quicker than expected. Their team was also very responsive when I had a couple of questions before ordering.