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
Caleb Marshall –
I purchased the 20325231AH ECM for my 2004 RAM Cummins and was impressed by the seamless plug-and-play setup. The unit arrived quickly with free shipping, and the programming matched my VIN perfectly. Their team was also very responsive when I had a couple of questions, making the entire process hassle-free. Overall, this has been a reliable replacement that got my truck back on the road without any issues.
Sean Lewis –
Received the programmed ECM quickly with free shipping, and it worked perfectly right out of the box—highly recommend!
Tyler Wallace –
I ordered the 20325231AH ECM for my 2004 RAM Cummins, and it arrived quickly with free shipping, which was a nice bonus. The unit came VIN programmed and was truly plug-and-play, making installation straightforward without any hassle. The team kept me informed throughout the process and answered all my questions promptly. Overall, excellent quality and service that I would definitely recommend.
Neil Campbell –
I was really impressed with how smooth the whole process was. The ECM arrived quickly, and it was already VIN programmed, which saved me a ton of hassle. The communication from the seller was top-notch—they answered all my questions within hours and kept me updated throughout the shipping process. The free shipping was a nice bonus, especially since I needed this part fast to get my 2004 Ram back on the road. Installation was straightforward, and the truck runs better than ever. Highly recommend this product and seller!
Brian Taylor –
Received my 2004 RAM ECM fully programmed and ready to go—setup was plug-and-play and the shipping was surprisingly fast and free. Communication was spot on, they answered all my questions quickly.
Scott Johnson –
I ordered the 20325231AH ECM for my 2004 RAM with the Cummins 5.9L, and I was really impressed by how smooth the entire process was. The unit arrived quickly with free shipping, which was a nice bonus. What stood out most was their professional programming service—they had my VIN perfectly programmed and ready to go right out of the box. Installation was straightforward, and my truck has been running flawlessly since. The seller also kept me informed every step of the way, which gave me a lot of confidence in the purchase. Overall, a great experience from start to finish.