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
Andrew Hall –
Received my ECM fully programmed and ready to go, plus the shipping was fast and free—couldn’t ask for a smoother experience.
Nathan Palmer –
The VIN programmed ECM arrived quickly with free shipping, and it fit perfectly in my 2004 Ram 5.9L—super happy with the smooth plug-and-play setup.
Henry Young –
I was a bit nervous about ordering an ECM online, but this 15235133AF unit for my 2004 RAM Cummins arrived quickly and was exactly as described. The best part was that it came VIN programmed, so installation was a breeze—just plug and play with no extra hassle. The shipping was free, which was a nice bonus, and the whole process felt very streamlined. After swapping it in, my truck runs smoother than it has in years. I’ll definitely be coming back here if I ever need another ECU.
Michael Gray –
I purchased the 15235133AF ECM for my 2004 RAM Cummins, and I’m really impressed with the entire process. The unit arrived quickly with free shipping, which was a great bonus. The ECU came VIN programmed and was truly plug-and-play, making installation straightforward and hassle-free. Customer service was responsive and kept me informed every step of the way, which gave me confidence in my purchase.
Benjamin Stewart –
I ordered the 15235133AF ECM for my 2004 Ram with the 5.9L Cummins, and it arrived quickly with free shipping, which was a nice bonus. The unit came fully VIN programmed, so installation was straightforward and plug-and-play. The quality is excellent, and my truck runs perfectly now. The seller was also very responsive, answering my questions promptly throughout the process.