Description
2005 Cadillac CTS 2.8L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2005 Cadillac CTS 2.8L 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



Harrison Anderson –
I had been struggling with my 2005 Cadillac CTS for weeks before I found this ECM replacement. The fact that it came VIN programmed saved me a huge headache, and the plug-and-play setup was exactly as described – no complicated procedures needed. Shipping was surprisingly quick and didn’t cost an arm and a leg, which was a relief. Throughout the process, the seller kept me in the loop, answering all my questions promptly. After installing it, my car runs smoother and feels like new again. Highly recommend this product and service to anyone in need of a reliable ECM.
Adam Douglas –
I ordered the 12581144 ECM for my 2005 Cadillac CTS, and I’m really impressed with the whole process. The unit arrived quickly with free shipping, which was a nice bonus. The ECU was already VIN programmed, so installation was straightforward without any extra hassle. Their team also responded promptly when I had questions, making the experience smooth and stress-free.
Paul Stewart –
I was nervous about ordering an ECM online, but this one for my 2005 Cadillac CTS arrived quickly and exactly as described. What really impressed me was the plug-and-play setup; it was already VIN programmed, so installation was a breeze with no extra hassle. The communication from the seller was top-notch—they answered all my questions promptly and made sure I knew what to expect at each step. It’s been running perfectly since I installed it, and the free shipping was a nice bonus on top of everything. Overall, a smooth and professional experience that I would definitely recommend.
Grant Johnson –
I was really impressed with how quickly the ECM arrived after ordering, and it was truly plug-and-play with no hassle at all. The installation went smoothly, and the unit was perfectly programmed for my 2005 Cadillac CTS. This saved me a significant amount compared to dealer prices, and the communication throughout the process was professional and clear. Overall, an excellent experience that I would recommend to anyone in need of a replacement ECU.
David Cox –
Received my programmed ECM quickly with free shipping and it fit perfectly in my 2005 CTS—no hassle at all. The team was super responsive when I had questions, making the whole process smooth.
Edward Wright –
Fast shipping and a plug-and-play unit made installation a breeze. Saved me a bundle compared to dealer prices and the communication was top-notch.