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





Mark Marshall –
Fast shipping and a plug-and-play unit made installation a breeze, saving me a ton compared to dealer prices. Great service and quick turnaround all around.
Neil Nichols –
I had a great experience ordering the 20325231AL ECM for my 2004 RAM Cummins. The unit arrived quickly with free shipping, which was a nice bonus. What impressed me the most was how smoothly the plug-and-play setup worked—no complicated programming on my end. The truck fired right up and runs like new again. Customer service was also very responsive and kept me informed at every step, which made the whole process stress-free. Highly recommend this product and seller!
Cole Scott –
Fast shipping and the VIN programming was spot on—got my 2004 Ram running like new in no time.
John Hall –
I’m really impressed with this ECM for my 2004 RAM 5.9L Cummins. The unit arrived quickly, and everything was plug-and-play with no issues during installation. The communication from the seller was clear and professional, which made the whole process smooth. This saved me a ton compared to dealer prices, and the truck runs perfectly now.
Tyler Lawrence –
I ordered the 20325231AL ECM for my 2004 RAM Cummins and was really impressed by how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. Their team handled the VIN programming professionally, so installation was basically plug-and-play. They also responded promptly to my questions, keeping me informed throughout the process.
Luke Burton –
I was really impressed with how quickly this ECM arrived—shipping was faster than I expected, which was a relief since I needed my Ram back on the road ASAP. The unit came fully VIN programmed and was literally plug-and-play, so installation went smoothly without any headaches. Compared to the dealer’s quote, this service saved me a ton of money, and the communication throughout the process was professional and clear. My truck is running perfectly now, and I couldn’t be happier with the quick turnaround and hassle-free experience. Definitely a great option for anyone looking to replace their ECM without breaking the bank.
Patrick Lopez –
Received my 2004 RAM ECM fully programmed and ready to plug in, plus free shipping made this an easy choice. Quick responses to my questions really impressed me.
Dominic Taylor –
The 20325231AL ECM for my 2004 RAM Cummins arrived quickly and was already VIN programmed, which made installation straightforward. I appreciated the professional programming service included—everything was plug-and-play with no additional setup needed on my end. Shipping was very reasonable, and the seller kept me updated throughout the process, answering all my questions promptly. Overall, a smooth experience from start to finish with a quality product.
Mason Cox –
I’m really impressed with the service I received for this ECM replacement on my 2004 RAM with the Cummins 5.9L engine. The unit arrived quickly, and the fact that it was already VIN programmed made installation a breeze—no extra trips to the shop needed. The shipping was surprisingly affordable, especially considering the size and complexity of the part. I also appreciated how responsive the seller was; they answered all my questions promptly, which made me feel confident about the purchase. Since swapping it in, my truck runs smoother than ever. Definitely recommended for anyone needing a hassle-free ECM solution.