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
Nathan Kelly –
Item arrived quickly with free shipping and was perfectly programmed for my 2004 RAM Cummins—installed and ready to go without a hitch.
James Morgan –
I was impressed with how smoothly the whole process went when ordering the ECM for my 2004 Ram 5.9L Cummins. The unit arrived well-packaged and exactly as described, and I appreciated that the VIN was programmed beforehand, so installation was truly plug-and-play. Shipping was faster than I expected and reasonably priced, which was a nice bonus. Whenever I had questions about the installation, their customer service responded quickly and clearly, making me feel confident throughout. Since the swap, my truck runs flawlessly, and I couldn’t be happier with the quality and service.
Brandon Cook –
I purchased the 20325233AL ECM for my 2004 RAM with the 5.9L Cummins and was impressed with how smoothly the whole process went. The unit arrived quickly with free shipping, which was a nice bonus. Their team also handled the VIN programming professionally, so installation was basically plug-and-play. I appreciated their prompt responses when I had questions, making the entire experience hassle-free.
Jordan Smith –
I purchased the 20325233AL ECM for my 2004 RAM 5.9L Cummins and couldn’t be happier with how everything went. The unit arrived quickly thanks to their free shipping, which was a nice surprise. What really stood out was the plug-and-play setup—they had it VIN programmed and ready to go, so installation was a breeze. After swapping it in, my truck fired right up and runs better than ever. The whole process was smooth and hassle-free, and I appreciated how professional their service was.
Harrison Scott –
I purchased the 20325233AL ECM for my 2004 Ram 5.9L Cummins and was impressed by how smoothly the plug-and-play setup worked. The unit arrived quickly with free shipping, which was a great bonus, and it was already VIN programmed, so installation was hassle-free. The quality of the part feels solid, and my truck runs like new again. Overall, a very satisfying experience from start to finish.
Gavin Kelly –
The plug-and-play setup made installation a breeze, and their communication was spot on throughout the entire process. Fast shipping too!