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 Mitchell –
Great experience—ECM arrived quickly with free shipping and was already VIN programmed, making installation a breeze. The seller’s communication was excellent throughout the process.
Neil Moore –
The ECM arrived quickly and was exactly as described for my 2005 Cadillac CTS. I appreciated that it came VIN programmed, which saved me a lot of hassle with installation. The seller provided excellent communication throughout the process and answered all my questions promptly. Shipping was very reasonable, and the whole experience was smooth and hassle-free.
Ian Sanders –
I was really impressed with how smoothly everything went ordering the ECM for my 2005 Cadillac CTS. The unit arrived quickly, and the best part was that it was already VIN programmed, so installation was literally plug-and-play. I had a few questions during the process, and the customer service team responded almost immediately, which made me feel confident in the purchase. The shipping was reasonably priced and arrived right on time, which was a nice bonus. After swapping it in, my car runs perfectly, just like new. Definitely a hassle-free experience that I’d recommend to anyone needing a quality replacement ECU.
Paul Walker –
The shipping was really fast, the unit was plug-and-play, and this saved me a ton compared to dealer prices—installation was smooth and hassle-free.