Description
2004 Chevrolet Impala 3.8L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Chevrolet Impala 3.8L 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
Gavin Peterson –
The VIN programmed ECM fit perfectly and was ready to go right out of the box—shipping was fast and free, which was a great bonus.
Michael Willis –
I recently purchased the 2004 Chevrolet Impala 3.8L ECM from this seller and couldn’t be happier. The unit arrived quickly with free shipping, which was a nice surprise. What really stood out was how professional the programming service was—they had the ECM VIN programmed perfectly before sending it out, so it was truly plug-and-play when it arrived. The installation went smoothly, and my car started right up without any issues. Overall, a seamless experience from start to finish!
Brian Brown –
I was really impressed with how quickly the ECM arrived after ordering, and the fact that it was already VIN programmed made installation straightforward. The unit plugged in with no issues, and my Impala fired up immediately without any error codes. Compared to dealership prices, this purchase saved me a significant amount, plus their communication throughout the process was clear and professional. Overall, a smooth experience from start to finish.
Brian Russell –
The updated ECM arrived quickly and was truly plug-and-play, saving me a bundle versus dealer prices. Installation went smoothly and the seller stayed in touch throughout the process.
Adam Little –
I ordered the 2004 Chevrolet Impala 3.8L ECM and was really impressed with how smoothly everything went. The unit came VIN programmed and was truly plug-and-play, which saved me a lot of hassle. Shipping was super reasonable, and I appreciated the quick delivery. Overall, the quality of the ECM and the professional programming made installation seamless.