Description
2004 Jeep Grand Cherokee 4.7L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Jeep Grand Cherokee 4.7L 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



Samuel Payne –
Received my programmed ECM quickly with free shipping—installation was seamless and my Jeep runs perfectly now. Customer support answered all my questions promptly too.
Oliver Murphy –
I ordered the 56044564AB ECM for my 2004 Jeep Grand Cherokee, and the whole process was smooth from start to finish. The unit arrived quickly with free shipping, which was a pleasant surprise. What really stood out was how well it was programmed to my VIN before shipping—made installation completely hassle-free. The Jeep runs perfectly now, and I’m very satisfied with the quality of the product and service.
Andrew Collins –
I was really impressed with how smoothly everything went when I ordered this ECM for my 2004 Jeep Grand Cherokee. The best part was that it came VIN programmed, so installation was practically plug-and-play. Shipping was free and arrived faster than I expected, which was a huge relief since I needed to get my Jeep back on the road quickly. The quality of the unit feels solid, and the engine runs so much better now. If you’re looking for a hassle-free solution, this is definitely the way to go.
Leo Little –
Fast shipping and the unit was truly plug-and-play. Installing this ECM saved me a bundle compared to dealer prices—highly recommend!