Description
2005 Cadillac CTS 3.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2005 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
Aiden Allen –
Received my programmed ECM quickly with free shipping, and it worked flawlessly right out of the box. Excellent service and fast turnaround!
Jonah Parker –
I purchased the 12596577 ECM for my 2005 Cadillac CTS and was very impressed with how quickly it arrived. The unit came perfectly programmed and was completely plug-and-play, making installation simple and hassle-free. Compared to dealer prices, this service saved me a significant amount of money, and the communication from the seller was clear and professional throughout the entire process. Highly recommend for anyone needing a reliable ECM replacement.
Oliver Stewart –
I purchased the 12596577 ECM for my 2005 Cadillac CTS and was impressed with how smoothly everything went. The unit arrived quickly with free shipping, and the plug-and-play setup made installation hassle-free. Their team kept me informed throughout the process and answered my questions promptly, which really helped me feel confident in the purchase. Overall, the quality of the ECM is excellent and my car runs perfectly now.
Diego Lopez –
The unit arrived quickly and was totally plug-and-play, saving me a ton compared to dealer prices. Installation was a breeze and the communication was excellent throughout.