Description
2004 Jeep Grand Cherokee 4.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Jeep Grand Cherokee 4.0L 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



Dylan Phillips –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2004 Jeep Grand Cherokee—plug-and-play worked flawlessly. Excellent service and very fast turnaround!
Leo Phillips –
I was really impressed with how smooth the whole process was when I ordered the 56044567AH ECM for my 2004 Jeep Grand Cherokee. The unit came fully VIN programmed, so installation was practically plug-and-play, saving me a ton of time and hassle. Shipping was free and surprisingly fast, which was a big plus since I needed my Jeep back on the road quickly. The quality of the ECM feels top-notch and my Jeep runs like it just came off the lot. Definitely a reliable source I’d turn to again if needed.
Jonah Payne –
The ECU arrived quickly and was truly plug-and-play, saving me a ton compared to dealer prices. Installation was smooth and their communication was spot-on.
Neil Nelson –
I was really impressed with how smooth the whole process was when ordering the ECM for my 2004 Jeep Grand Cherokee. The unit arrived quickly, and it was already VIN programmed, so installation was plug-and-play with no extra hassle. The shipping was free, which was a nice bonus on top of the great price. I had a couple of questions before buying, and their customer service responded promptly and clearly, which gave me confidence in my purchase. After swapping the unit in, my Jeep runs perfectly again—definitely a solid buy if you need a reliable ECM.
Diego Sharp –
I was really impressed with how smoothly everything went with this ECM for my 2004 Jeep Grand Cherokee. The unit came fully VIN programmed, so installation was basically plug-and-play, which saved me a lot of hassle. Shipping was quick and very reasonable, and the quality of the part feels top-notch. They also kept me informed throughout the process, which gave me a lot of confidence in my purchase.