Description
2019 Cadillac XTS 3.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2019 Cadillac XTS 3.6L 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





James Harrison –
I was a bit nervous ordering an ECM online, but this 2019 Cadillac XTS 3.6L ECM arrived exactly as described and VIN programmed, which saved me a ton of hassle. The shipping was surprisingly fast and free, which was a great bonus. What really stood out was their communication—they kept me updated throughout the entire process and answered all my questions promptly. Installation was straightforward thanks to the plug-and-play setup, and my car has been running perfectly since. Definitely a reliable source for these parts.
Marcus Page –
I needed a replacement ECM for my 2019 Cadillac XTS, and this unit was exactly what I was looking for. The VIN was already programmed, which made installation straightforward and hassle-free. Shipping was very reasonable, and the whole process was faster than I expected. Customer service answered my questions promptly, so I felt confident throughout the purchase.
Adrian Cooper –
The ECM arrived quickly with free shipping and was perfectly programmed for my 2019 Cadillac XTS—installation was totally hassle-free. Communication was spot on, they answered all my questions right away and kept me informed throughout the process.
Chris Nichols –
Fast shipping and the plug-and-play ECM worked perfectly in my 2019 Cadillac XTS. Saved me a bundle versus the dealer, and installation was a breeze.