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
Colin Russell –
I was really impressed with how smoothly the whole process went. The ECM came programmed to my VIN, so installation was straightforward with no extra hassle. Shipping was surprisingly fast and free, which was a great bonus. The truck runs perfectly now, and I appreciate the clear communication throughout the order.
Adrian Wilson –
I purchased the 20325253AG ECM for my 2004 RAM Cummins and was impressed by how quickly it arrived with free shipping. The unit came VIN programmed and ready to install, which made the whole process hassle-free. The communication from the seller was excellent—they answered all my questions promptly and kept me informed throughout. Overall, this was a smooth experience with a high-quality product that works perfectly.
Bruce Murphy –
I was a bit nervous about replacing the ECM on my 2004 Ram 5.9L Cummins, but this unit arrived already VIN programmed, which made the whole process so much easier. The seller’s communication was top-notch—they answered all my questions quickly and kept me posted throughout the shipping process. Shipping was faster than I expected and very reasonably priced, which was a nice bonus. Since installation, my truck runs smoother than ever, and I haven’t had any issues at all. Definitely worth buying from this source if you want a hassle-free replacement.
Ian Bailey –
Excellent plug-and-play setup with this ECM—had my 2004 Ram running smooth in no time. Shipping was fast and reasonable too!
Robert Peterson –
I was really impressed with how smoothly everything went when I ordered the 20325253AG ECM for my 2004 RAM Cummins. The unit arrived quickly, and the best part was that it came fully VIN programmed, so installation was basically plug-and-play. I appreciated how the seller kept me updated throughout the entire shipping process and promptly answered my questions when I reached out to confirm compatibility. The truck fired up perfectly right away, and I didn’t have to waste time or money on additional programming. Overall, a hassle-free experience with excellent customer support.
Colin Lawrence –
The VIN programmed ECM arrived quickly with free shipping and worked perfectly right out of the box. Great service and fast turnaround!
Elijah Sharp –
I was really impressed with how smoothly everything went ordering this ECM for my 2004 RAM Cummins. The unit arrived quickly with free shipping, which was a nice bonus. What stood out the most was that it came VIN programmed and ready to plug and play—no extra hassle or trips to the mechanic. Their customer support was also great; they answered all my questions promptly and kept me informed every step of the way. After installing it, my truck fired right up and runs perfectly. Overall, a fantastic experience from start to finish.
Jacob Jenkins –
I was really impressed with the service I received when ordering the 20325253AG ECM for my 2004 RAM Cummins. The team provided professional VIN programming, so it was truly plug-and-play once it arrived. Shipping was surprisingly fast and reasonably priced, which was a huge plus. Throughout the process, they kept me informed every step of the way, answering all my questions quickly and thoroughly. After installing the ECM, my truck is running smoother than it has in years.