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
Nicholas Ward –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2004 Jeep—super easy plug-and-play setup. Communication was spot on, keeping me informed every step of the way.
Adam Ramirez –
I ordered the 56044563AA ECM for my 2004 Jeep Grand Cherokee and was really impressed with the entire process. The unit came VIN programmed, so installation was straightforward without any extra hassle. Shipping was free and incredibly fast, which was a nice bonus. They also kept me in the loop the whole time, answering my questions quickly and professionally.
Jordan Collins –
I was really impressed with how smoothly everything went when I ordered this ECM for my 2004 Jeep Grand Cherokee. The plug-and-play setup made installation a breeze, and I didn’t need any special tools or extra programming on my end. Shipping was surprisingly fast, arriving well ahead of schedule, which helped me get back on the road quickly. The quality of the unit feels solid and reliable, exactly what I needed to fix my engine issues. Overall, a hassle-free experience with a product that works just as described.