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
Dylan Phillips –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2004 Jeep Grand Cherokee—plug-and-play worked flawlessly. Excellent service and very fast turnaround!
Leo Phillips –
I was really impressed with how smooth the whole process was when I ordered the 56044567AH ECM for my 2004 Jeep Grand Cherokee. The unit came fully VIN programmed, so installation was practically plug-and-play, saving me a ton of time and hassle. Shipping was free and surprisingly fast, which was a big plus since I needed my Jeep back on the road quickly. The quality of the ECM feels top-notch and my Jeep runs like it just came off the lot. Definitely a reliable source I’d turn to again if needed.
Neil Nelson –
I was really impressed with how smooth the whole process was when ordering the ECM for my 2004 Jeep Grand Cherokee. The unit arrived quickly, and it was already VIN programmed, so installation was plug-and-play with no extra hassle. The shipping was free, which was a nice bonus on top of the great price. I had a couple of questions before buying, and their customer service responded promptly and clearly, which gave me confidence in my purchase. After swapping the unit in, my Jeep runs perfectly again—definitely a solid buy if you need a reliable ECM.
Diego Sharp –
I was really impressed with how smoothly everything went with this ECM for my 2004 Jeep Grand Cherokee. The unit came fully VIN programmed, so installation was basically plug-and-play, which saved me a lot of hassle. Shipping was quick and very reasonable, and the quality of the part feels top-notch. They also kept me informed throughout the process, which gave me a lot of confidence in my purchase.