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
Dylan James –
I was really impressed with how smoothly the whole process went. The ECU arrived quickly thanks to their free shipping, and it was already VIN programmed, so installation was a breeze. My 2004 Ram 5.9L started right up with no issues at all. I also appreciated how they kept me in the loop with status updates, which helped ease any concerns I had. Overall, a great experience from start to finish and exactly what my truck needed.
Adam Murphy –
I purchased the 15235133AC ECM for my 2004 Ram Cummins, and I’m really impressed with the overall experience. The unit arrived quickly with free shipping, which was a great bonus. What stood out most was the plug-and-play setup—they had it programmed to my VIN and ready to install right out of the box. The truck runs perfectly now, and the whole process was hassle-free.
Eric Turner –
Got my 2004 RAM ECM with VIN programming and it was a perfect plug-and-play fit, plus the communication was top-notch throughout the process. Fast shipping too!
Chase Edwards –
I ordered the 15235133AC ECM for my 2004 Ram Cummins and was really impressed with how quickly it arrived—free shipping was a nice bonus. The unit came VIN programmed, so installation was straightforward and hassle-free. The seller stayed in touch throughout the process, promptly answering my questions, which made the whole experience smooth and reassuring. The truck runs perfectly now with no issues at all.
Elijah Peterson –
Received the ECM quickly with free shipping, and it was perfectly programmed for my 2004 RAM—installation was a breeze.