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 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
Adam Campbell –
I recently purchased the 56044564AJ ECM for my 2004 Jeep Grand Cherokee, and I couldn’t be happier with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. What really impressed me was that the PCM came already VIN programmed, so installation was pretty much plug-and-play. The engine started right up with no issues, and the vehicle runs better than it has in years. Customer service was great, too—they answered all my questions promptly and made the whole process stress-free. Highly recommend this seller for anyone needing a reliable ECM.
Kevin Miller –
I was really impressed with how smoothly everything went from start to finish. After my original ECU failed, I found this 56044564AJ unit for my 2004 Jeep Grand Cherokee, and it arrived VIN programmed and ready to go. The seller offers free shipping, which was a nice bonus, and the part fit perfectly without any issues. Installation was straightforward, and my Jeep fired up immediately with no error codes. They also kept me updated throughout the process, which gave me a lot of confidence in their service. Definitely recommend if you need a reliable ECM replacement.
John Lopez –
Received my programmed ECM quickly with free shipping—plug-and-play was exactly as promised, no hassles at all.
Miguel Collins –
I was impressed with how quickly my 56044564AJ ECM arrived, especially with the free shipping option. The unit came fully VIN programmed, so installation was straightforward without any extra hassle. Their team answered all my questions promptly, which gave me confidence throughout the process. My 2004 Jeep Grand Cherokee is running smoothly again thanks to this quality replacement.