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





Harvey Richardson –
I was really impressed with how quickly this ECM arrived—shipping was faster than I expected. The unit was plug-and-play, which made the installation straightforward even for a non-expert like me. Choosing this service saved me a ton compared to dealer prices, and their communication throughout the process was clear and helpful. Overall, a smooth experience from start to finish.
Nicholas Lawrence –
I purchased the 12600797 ECM for my 2005 Cadillac CTS and was really impressed with the professional programming service included. The unit arrived already VIN programmed, which made installation straightforward without any extra hassle. Shipping was surprisingly quick, and the team kept me informed throughout the process, answering all my questions promptly. Overall, the quality and service exceeded my expectations.
Jose Murray –
The unit arrived quickly and was truly plug-and-play, saving me a bundle compared to dealer prices. Installation was smooth, and the customer service was top-notch throughout.
Fast shipping and perfect fit—this ECM was ready to go right out of the box. It saved me a ton over dealer costs and the whole process was hassle-free.
Received my programmed ECM much faster than I expected, and it installed without a hitch. This service definitely kept thousands off my repair bill compared to the dealer.
Quick delivery and a plug-and-play unit made this an easy fix. I avoided dealer markups and appreciated the clear communication from start to finish.
The programmed ECM showed up fast and worked immediately—such a relief! Definitely saved me a lot of money versus dealing with the dealership.
Robert Morgan –
I was a bit nervous ordering an ECM online for my 2005 Cadillac CTS, but this purchase exceeded my expectations. The unit arrived quickly and was already VIN programmed, which saved me a huge headache. Shipping was free, so I didn’t have to worry about extra costs piling up. After installation, my car fired up perfectly and runs smoother than it has in years. The entire process felt seamless thanks to the clear communication from the seller, who promptly answered all my questions. Highly recommend for anyone needing a reliable ECM replacement.
Chase Payne –
The VIN programmed ECM arrived quickly with free shipping, and installation was a breeze thanks to their plug-and-play setup. Communication was spot on throughout the process.