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



Colin Morgan –
Shipping was super quick, the ECM was plug-and-play, and it saved me a ton versus dealer prices—installation went smoothly with great communication throughout.
Noah Keller –
Arrived quickly with free shipping and worked perfectly right out of the box—highly recommend for anyone needing a hassle-free ECU replacement.
The VIN programming was spot on, and their team answered all my questions fast, making the process smooth and easy.
Excellent service with a super fast turnaround; the ECU was ready to plug and play the day after I ordered.
Shipping was reasonable and the unit arrived exactly as described, fully programmed and ready to go without any issues.
Really impressed by the quick replies from their support and the professional setup they provide for these modules.