Description
2004 Jeep Grand Cherokee 4.7L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Jeep Grand Cherokee 4.7L 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
Jonah Wilson –
The ECM arrived quickly and was truly plug-and-play, saving me a bundle versus dealer prices. Installation was straightforward and the communication was spot-on throughout the process.
Allan Little –
I purchased the 56044778AA ECM for my 2004 Jeep Grand Cherokee, and it arrived quickly with free shipping, which was a great bonus. The unit was VIN programmed as promised, making installation hassle-free and plug-and-play. Customer support was very responsive and answered all my questions promptly, which gave me confidence throughout the process. Overall, the quality and service exceeded my expectations.
Max Ramirez –
I recently purchased the 56044778AA ECM for my 2004 Jeep Grand Cherokee, and I’m really impressed with the whole experience. The unit arrived quickly and was already VIN programmed, which saved me a lot of hassle. What stood out was how smoothly the plug-and-play setup worked—just swapped it in, and my Jeep fired right up without any issues. The customer service was also top-notch; they responded promptly to my questions and kept me informed throughout the process. Overall, a great purchase that got my vehicle back on the road faster than I expected.
Zachary Richardson –
I was really impressed with the quality of the ECM I received for my 2004 Jeep Grand Cherokee. The unit came VIN programmed and ready to go, which made installation a breeze without needing any extra trips to the shop. Shipping was surprisingly fast and affordable, so I didn’t have to worry about extra costs piling up. Throughout the process, the seller kept me informed about the status of my order, which I appreciated a lot. My Jeep runs flawlessly now, and I’m very happy with the whole experience.
Nicholas Rogers –
I ordered the 56044778AA ECM for my 2004 Jeep Grand Cherokee and was very impressed with how quickly it arrived. Installation was straightforward since the unit was fully VIN programmed and completely plug-and-play. This saved me a ton compared to dealer prices, and the support team stayed in touch the whole time to answer my questions. Overall, a smooth process from start to finish.
Chase Cook –
Received my programmed ECM for my 2004 Jeep Grand Cherokee quickly with free shipping—installation was straightforward and everything runs perfectly.
Great communication throughout the process, and the plug-and-play setup made replacing my Jeep’s ECM hassle-free.
The updated PCM for my Jeep came fast, and their professional programming service meant no extra trips to the shop—highly recommend.