Description
2017 Cadillac CTS 3.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2017 Cadillac CTS 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



Dylan Russell –
I purchased the 2017 Cadillac CTS ECM, and it arrived quickly with free shipping, which was a huge plus. The unit was VIN programmed and ready to install right out of the box, making the whole process seamless. Customer service was responsive and answered all my questions promptly, which gave me confidence throughout the purchase. Overall, it was a smooth experience and my car runs perfectly now.
Blake Barrett –
I’m really happy with the 12704476 ECM for my 2017 Cadillac CTS. The shipping arrived quickly, and the unit was already VIN programmed, so installation was seamless and hassle-free. The process saved me a significant amount compared to dealership prices, and the team’s communication throughout was professional and clear. Overall, a smooth experience from ordering to getting my car back on the road.
Edward Rivera –
Received my 2017 Cadillac CTS ECM quickly with free shipping, and the plug-and-play setup was flawless—highly recommend!
Victor Gray –
Fast shipping and the unit was truly plug-and-play. Saved me a bundle over dealer prices with smooth installation and excellent communication.
Austin Palmer –
I was a bit nervous ordering an ECU online, but this 2017 Cadillac CTS ECM arrived exactly as described and was already VIN programmed, which saved me a huge hassle. The plug-and-play setup made installation straightforward, and my car fired up perfectly on the first try. Shipping was surprisingly fast and affordable, so I didn’t have to wait long to get back on the road. I also appreciated how the seller answered all my questions quickly and kept me informed throughout the process. Overall, a smooth experience from start to finish.