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
Henry Baker –
I was a bit nervous about ordering an ECM online for my 2004 Jeep Grand Cherokee, but this unit arrived quickly and was already VIN programmed, which saved me a lot of hassle. The setup was truly plug-and-play, and my Jeep fired right up with no issues. The shipping was surprisingly fast and free, which was a nice bonus. I also appreciated the prompt responses when I had a couple of questions before purchasing. Overall, a smooth experience and great quality part.
Harvey Bell –
Received my programmed ECM quickly with free shipping, and it fit perfectly in my 2004 Jeep Grand Cherokee. Great service and hassle-free plug-and-play setup!
Mark Campbell –
I ordered the 56044565AC ECM for my 2004 Jeep Grand Cherokee, and I’m really impressed with the service. The unit arrived quickly with free shipping, which was a nice bonus, and it was already VIN programmed, so installation was smooth and straightforward. Their communication was top-notch; they kept me informed throughout the process and answered all my questions promptly. The engine runs perfectly now, no issues at all.