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
Jonah Reed –
I was really impressed with how smoothly everything went when I ordered the 20325231AC ECM for my 2004 RAM Cummins. The unit arrived quickly with free shipping, which was a nice bonus. What stood out the most was the plug-and-play programming service they provided; my truck started right up without any issues. The communication was solid too—any questions I had were answered promptly. Overall, the quality and service made this a hassle-free experience, and my engine runs better than ever.
Luis Brooks –
The ECM arrived quickly with free shipping and was already VIN programmed, making installation hassle-free. Great service and fast turnaround!
Jordan Reed –
I was impressed with how smoothly the whole process went. The ECM arrived quickly with free shipping, and it was already VIN programmed, so installation was straightforward and hassle-free. The team answered all my questions promptly and kept me updated every step of the way. My 2004 Ram runs like new again thanks to their professional service.
Ryan Evans –
I was really impressed with how smooth the entire process was. After ordering the 20325231AC ECM for my 2004 Ram with the 5.9L Cummins, it arrived quickly thanks to their reasonable shipping rates. The best part was that it came VIN programmed, so I just plugged it in with no hassle. Their team also kept me in the loop every step of the way, answering my questions promptly. My truck is running like new again, and I couldn’t be happier with the quality and service.
Blake Torres –
I was really impressed with the service for this 20325231AC ECM. Ordering was straightforward, and they kept me informed at every step, which made the whole process stress-free. The unit arrived programmed to my VIN just like they promised, so installation was plug-and-play with no headaches. Shipping was fast and surprisingly affordable, especially considering how specialized this part is. After swapping it in, my 2004 Ram’s performance felt like new again. Overall, a great experience from start to finish.
Paul Lewis –
The 20325231AC ECM for my 2004 RAM Cummins arrived quickly with free shipping, which was a nice bonus. The unit was VIN programmed and ready to install, making it a truly plug-and-play experience. Customer support was responsive and answered all my questions promptly, which gave me confidence throughout the process. Overall, it worked flawlessly and got my truck back on the road without any hassle.
Anthony Sanders –
The unit arrived quickly with free shipping, and their plug-and-play programming made installation a breeze—highly recommend!