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
Logan Allen –
I purchased the 20325231AB ECM for my 2004 RAM Cummins and was really impressed with how smoothly everything went. The unit came VIN programmed and ready to install, which saved me a lot of time and hassle. Shipping was fast and free, and I appreciated the clear communication throughout the process when I had a few questions. Overall, a solid experience and the truck runs perfectly now.
Mason Lewis –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2004 RAM—installation was a breeze. Communication was spot on, and they answered all my questions right away.
Logan Brooks –
I was a bit nervous ordering an ECM online for my 2004 RAM Cummins, but this unit arrived exactly as described and was already VIN programmed, which saved me a ton of hassle. The plug-and-play setup made installation straightforward, and my truck fired right up with no issues. Shipping was surprisingly fast and didn’t cost me an arm and a leg, which I really appreciated. Throughout the process, the seller kept me in the loop with updates, so I always knew where my part was. Overall, a smooth and professional experience from start to finish.
Samuel Scott –
The 20325231AB ECM arrived quickly and was exactly as described for my 2004 RAM with the 5.9L Cummins. I appreciated that it came fully VIN programmed, which made installation completely plug-and-play with no hassle. The seller kept me informed throughout the process and answered all my questions promptly. Shipping was also very reasonable, making the whole experience smooth and stress-free.
Joel Ward –
The ECU arrived quickly with free shipping, and it was perfectly programmed for my 2004 RAM—couldn’t be happier with the service.
Great communication throughout the entire process, and the plug-and-play setup made installation a breeze on my Cummins.
Fast turnaround and the ECM works flawlessly; their updates kept me in the loop every step of the way.
They provided professional programming that saved me a ton of time, plus shipping was super affordable.
Quality repair and excellent customer support—answered all my questions right away and got my truck running like new.