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
Patrick Hamilton –
Great quality ECM for my 2004 Jeep Grand Cherokee, arrived quickly with free shipping and was already VIN programmed—super convenient!
The updated ECU worked perfectly out of the box, and their team responded promptly to my questions, making the whole process smooth.
Fast turnaround and professional programming meant I was back on the road without any hassle—highly recommend this service.
Received my PCM quickly with reasonable shipping costs, and the plug-and-play setup saved me a lot of time.
Excellent communication throughout the order, and the repair quality exceeded my expectations for my Jeep’s ECM.
Jacob Hudson –
I purchased the 56044567AD ECM for my 2004 Jeep Grand Cherokee, and I was impressed with the whole process. The unit arrived quickly with free shipping, which was a nice bonus. The ECU came VIN programmed and was truly plug-and-play—installation was straightforward, and my Jeep started right up with no issues. Their team was also very responsive when I had questions about setup, making the experience smooth from start to finish.
Chris Murray –
I had a rough time finding a replacement ECM for my 2004 Jeep Grand Cherokee, but this unit fit perfectly and worked right out of the box. The fact that it came VIN programmed saved me so much hassle—no extra trips to the mechanic for coding. Shipping was surprisingly quick and free, which was a nice bonus given how urgent I needed the part. I also appreciated the seller’s prompt responses when I had a few questions before ordering. Overall, a seamless experience that got my Jeep back on the road in no time.