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
Max Sharp –
I was really impressed with how smoothly everything went with this ECM for my 2004 Jeep Grand Cherokee. The unit arrived quickly, and what stood out was that it came VIN programmed, so installation was basically plug-and-play. I reached out with a few questions before ordering, and their team responded promptly, providing clear and helpful answers. Once installed, my Jeep ran like new again, no issues or error codes. Overall, the combination of fast shipping and professional programming made this a hassle-free experience.
Nicholas Palmer –
I was a bit nervous ordering the 56044565AJ ECM for my 2004 Jeep Grand Cherokee, but the whole process went smoothly. The unit arrived quickly with free shipping, which was a nice bonus. What really impressed me was the plug-and-play setup—once I installed it, my Jeep fired right up with no issues. The quality felt top-notch, and I didn’t have to waste time messing with complicated programming. Overall, a great experience that got my vehicle back on the road fast.
Aiden Graham –
I ordered the 56044565AJ ECM for my 2004 Jeep Grand Cherokee and was really impressed with the entire process. The unit arrived quickly with free shipping, which was a nice bonus. The ECU came pre-programmed to my VIN, so installation was straightforward and hassle-free. Their team also responded promptly when I had questions about compatibility, making the whole experience smooth and stress-free.
Max Ramirez –
Great product with plug-and-play programming that made installation a breeze. Shipping was fast and affordable too!