Description
2004 Jeep Grand Cherokee 4.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Jeep Grand Cherokee 4.0L 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
Miguel Roberts –
I purchased the 56044563AI ECM for my 2004 Jeep Grand Cherokee, and the experience was excellent from start to finish. The unit arrived quickly with free shipping, and it was already VIN programmed, making installation straightforward. The quality of the ECU is outstanding, and the vehicle runs perfectly now. Customer service was very responsive when I had a couple of questions, which I really appreciated.
Frank Murray –
I was a bit nervous ordering a replacement ECM for my 2004 Jeep Grand Cherokee, but this unit arrived exactly as described and was VIN programmed, which made installation straightforward. The plug-and-play setup saved me a lot of time and hassle since I didn’t have to hunt down a local shop to get it programmed. Shipping was free, and it came faster than I expected, which was a big plus. The engine runs smoother now, and all the previous error codes are gone. Overall, a solid experience from start to finish.
Elliot Russell –
I was a bit nervous ordering an ECM online for my 2004 Jeep Grand Cherokee, but this unit arrived exactly as described and came VIN programmed, so installation was straightforward with no extra hassle. The shipping was surprisingly quick and affordable, which was a nice bonus. Throughout the process, the seller kept me informed about every step, answering my questions promptly and making me feel confident about the purchase. After installing the ECM, my Jeep runs smoother than it has in years. Highly recommend for anyone needing a reliable replacement with professional programming included.
Andrew James –
Fast shipping and the ECU arrived already programmed for my 2004 Jeep Grand Cherokee—plug and play with zero hassle. Great service!
The communication was spot-on; they answered my questions quickly and shipped the updated ECM with no delays. Highly recommend.
Received my 56044563AI module with free shipping and it worked perfectly right out of the box on my Jeep. Very impressed!