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




Andrew Chapman –
Fast shipping and the plug-and-play unit worked perfectly—definitely saved me a bundle versus the dealer. Installation was a breeze and the customer service was top-notch.
Jeremy Reed –
I was really impressed with how quickly this ECM arrived—definitely faster than I expected. Installing the 56044567AB on my 2004 Jeep Grand Cherokee was surprisingly straightforward; it was essentially plug-and-play, which saved me a ton of headaches. The unit was already VIN programmed, so I didn’t have to deal with any complicated setup or extra trips to the mechanic. Overall, this service saved me a lot compared to the dealer quotes, and their communication was spot on, answering all my questions promptly. I’m grateful for the smooth process and the professional approach—they made what seemed like a daunting repair feel seamless.
Jose Hudson –
Received my programmed ECU quickly with free shipping, and it fit perfectly in my 2004 Jeep Grand Cherokee. The communication was spot-on and made the whole process hassle-free.
Trevor Payne –
The 56044567AB ECM for my 2004 Jeep Grand Cherokee arrived quickly, and the free shipping was a nice bonus. What really impressed me was the professional VIN programming service they included, which made installation completely hassle-free. The unit has been running perfectly since, and I appreciate the detailed instructions that came with it. Definitely a reliable replacement option.
Cameron Hayes –
I ordered the 56044567AB ECM for my 2004 Jeep Grand Cherokee and was really impressed with how quickly it arrived. The unit was completely plug-and-play, making the installation process straightforward even for someone with limited experience. The communication from the seller was clear and helpful throughout, which made the whole experience smooth. Choosing this service instead of the dealer saved me a significant amount of money without sacrificing quality.