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



Scott Tucker –
Shipping was super quick and the plug-and-play unit worked perfectly, saving me a bundle compared to the dealer’s price. Installation was smooth and the customer service kept me informed throughout.
Dylan Payne –
The ECM arrived quickly with free shipping and was perfectly programmed for my 2005 Cadillac CTS; installation was a breeze. Communication was spot-on, and they answered all my questions faster than I expected.
Russell Ramirez –
I’m really impressed with how quickly this ECM arrived—shipping was faster than I expected. The unit was clearly pre-programmed and plug-and-play, which made installation a breeze without needing extra tuning. Compared to dealer prices, this was a huge money saver, and the communication throughout the process was very professional. Overall, a smooth experience from start to finish.