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.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566



Brandon Adams –
I received the 15235133AC ECM for my 2004 RAM Cummins quicker than expected, and the free shipping was a nice bonus. The unit arrived VIN programmed and ready to install, which made the whole process hassle-free. Their team was helpful and answered my questions promptly, making me feel confident about my purchase. The truck runs smoothly now, and I’m very satisfied with the quality of the product.
Zachary Ramirez –
Super fast shipping and the ECM came perfectly VIN programmed—plug-and-play was a breeze. Highly recommend!
Michael Little –
I recently purchased the 15235133AC ECM for my 2004 RAM Cummins, and I couldn’t be happier with the experience. The unit arrived much faster than I expected, which was a huge relief since I needed my truck back on the road quickly. Installation was straightforward—just plug-and-play—and it fired up immediately without any issues. The best part was how much money I saved compared to the dealer’s quote, which was way out of my budget. Their communication throughout the process was clear and professional, making the whole transaction smooth and stress-free. I highly recommend this service to anyone needing an ECM replacement without breaking the bank.
Andrew Moore –
I’m really impressed with the 15235133AC ECM for my 2004 Ram 5.9L Cummins. The unit arrived quickly and was truly plug-and-play, making installation a breeze without any hassle. Compared to dealer prices, this service saved me a ton of money, and their communication throughout the process was clear and professional. Overall, a smooth transaction and an excellent product that got my truck running perfectly again.
Dominic Keller –
I ordered the 15235133AC ECM for my 2004 RAM with the Cummins 5.9L, and I’m really impressed with the whole experience. The module arrived quickly, and the VIN programming was spot on, which made installation seamless. I appreciated the professional programming service they provide—it saved me a ton of time and hassle compared to trying to do it myself. The seller also kept me updated throughout the process, answering all my questions promptly. My truck runs perfectly now, and I’d definitely buy from them again.
Jack Campbell –
Fast shipping and the ECM was truly plug-and-play. Saved me a bundle compared to the dealer and installation was a breeze.
The unit arrived quickly and worked perfectly right out of the box. Great communication and saved me major cash over dealership prices.
Quick delivery and a hassle-free install made this purchase a no-brainer. The programming was spot on, and I avoided expensive dealer fees.
Super fast shipping and the module fit right in with no issues. Professional service all around, plus saved a ton over the dealer’s quote.
Got the ECM in no time, plugged it in, and it ran like new. Saved big bucks and the whole process was smooth from start to finish.