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
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.