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
Henry Poole –
I ordered the 20325253AM ECM for my 2004 RAM 5.9L Cummins and was really impressed with the plug-and-play setup. The unit arrived quickly with free shipping, which was a nice bonus. They had my ECU programmed specifically for my VIN, so installation was seamless, and my truck runs better than ever. The entire process was straightforward and hassle-free.
Steven Kelly –
The ECM arrived quickly with free shipping, and the plug-and-play setup made installation a breeze. Great service and excellent communication throughout!
Grant Nelson –
The ECM arrived quickly with free shipping, and the plug-and-play programming saved me a ton of hassle—perfect fit for my 2004 RAM.
Jason Carter –
I ordered the 20325253AM ECM for my 2004 RAM with the 5.9L Cummins, and the whole process was seamless. The unit arrived quickly with free shipping, which was a nice bonus. They did the VIN programming for me, so it was truly plug-and-play—just swapped it out and my truck fired right up with no issues. Their team was also very responsive when I had a couple of questions before ordering, making the experience stress-free.
Allan Miles –
I ordered the 20325253AM ECM for my 2004 Ram with the 5.9L Cummins, and I’m really impressed with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice surprise. They also offer professional VIN programming, so I didn’t have to worry about any complicated setup. After installation, my truck runs like new again, with no hiccups or error codes. I appreciate how the team kept me in the loop throughout the process—definitely a trustworthy seller I’d recommend.