Description
2012 Cadillac CTS 3.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Cadillac CTS 3.0L 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




Hunter Murphy –
I was really impressed with how smooth the entire process went when I ordered the 2012 Cadillac CTS 3.0L ECM. The unit arrived faster than I expected, and the free shipping was a nice bonus. What stood out most was the professional programming service—they had my VIN perfectly matched and ready to go when it got to me, so installation was a breeze. I also appreciated that the support team answered all my questions promptly, which made me feel confident throughout. After installing the ECM, my car is running like new again. Highly recommend for anyone needing a reliable replacement!
Harvey Douglas –
The unit arrived quickly and was completely plug-and-play, saving me a ton compared to dealer prices. Installation went smoothly, and the customer service was very responsive.
Oliver Moore –
I was a bit nervous about ordering an ECM online for my 2012 Cadillac CTS, but this purchase exceeded my expectations. The unit arrived quickly with free shipping, which was a nice surprise. What impressed me most was how smoothly the VIN programming was handled—plug-and-play setup made installation straightforward and hassle-free. The seller also kept me in the loop throughout the process, answering my questions promptly. My car runs like new again, and I’m really glad I chose this service.
Gavin Hayes –
The VIN programmed ECM for my 2012 Cadillac CTS arrived quickly and was exactly as described. The plug-and-play setup made installation straightforward, and the car started right up without any issues. I appreciated the team’s prompt responses to my questions and how they kept me informed throughout the process. Overall, a smooth experience with great quality parts.
John Baker –
I was really impressed with how quickly this 2012 Cadillac CTS ECM arrived—shipping was surprisingly fast, which made a stressful situation a lot easier. When it came time to install, the unit was truly plug-and-play, just as described, and everything worked perfectly right out of the box. The whole process went smoothly, and I was in and out without any headaches. Best of all, this saved me a small fortune compared to what the dealer quoted for the same service. Communication with the seller was clear and professional, so I felt confident every step of the way. Overall, a fantastic experience that I’d recommend to anyone needing ECU repairs.
Max Gray –
I was really impressed with how quickly the ECM arrived after placing my order, and it was completely plug-and-play with my 2012 Cadillac CTS 3.0L. The installation went smoothly without any issues, and the VIN programming was spot on. Choosing this unit over going to the dealer saved me a significant amount of money, and the communication from the seller was clear and helpful throughout the process. Overall, a great experience from start to finish.
David Taylor –
The VIN programming was spot on, and their communication kept me informed every step of the way. Shipping was quick and reasonable too.