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.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566




Neil Tucker –
I was really impressed with how quickly this ECM arrived, and the fact that it was already VIN programmed made installation a breeze. The unit was truly plug-and-play, which saved me a lot of hassle and time. Compared to the dealer’s quote, this service was a huge money saver, and the staff kept me informed throughout the entire process. Overall, a smooth experience from start to finish.
Grant Hayes –
I was really impressed with how quickly my ECM arrived after placing the order for my 2004 Jeep Grand Cherokee. The unit came fully programmed to my VIN, and installation was surprisingly simple—it was basically plug-and-play, which saved me so much time and hassle. Compared to the dealership’s estimate, this service saved me a ton of money without sacrificing quality. The communication from the seller was clear and helpful throughout the process, answering my questions promptly. Overall, it felt like a smooth, professional experience from start to finish. I’d definitely recommend this to anyone needing a reliable ECM replacement.
Adrian Smith –
Shipping was super quick and the unit was truly plug-and-play, saving me hundreds compared to dealer prices. Installation went smoothly thanks to their clear communication and fast turnaround.
Jordan Bailey –
Fast shipping and the VIN programming was spot on—my Jeep runs like new again.