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
Joel Ramirez –
I was really impressed with how smoothly everything went with this ECM purchase. The unit arrived quickly, and the fact that it came already programmed to my Jeep’s VIN saved me a ton of hassle. The installation was straightforward, and I had my Grand Cherokee running like new in no time. Customer service was super responsive too—they answered all my questions promptly and kept me in the loop throughout the process. Definitely a stress-free experience from start to finish.
Lucas Payne –
I recently purchased the 56044563AE ECM for my 2004 Jeep Grand Cherokee, and I’m really impressed with the overall experience. The unit arrived quickly with free shipping, which was a nice surprise. The plug-and-play setup was straightforward, and the vehicle started right up without any issues. Their communication was excellent—I got prompt responses to all my questions, which made me feel confident throughout the process.
Kyle Ward –
Great quality ECM for my 2004 Jeep Grand Cherokee, arrived quickly with free shipping and worked perfectly right out of the box. The plug-and-play setup saved me a lot of hassle!