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
Jack Peterson –
I purchased the 12600547 ECM for my 2005 Cadillac CTS and was impressed by how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. What really stood out was the professional VIN programming service included—they took care of all the setup, so I didn’t have to worry about compatibility. Overall, the repair quality seems top-notch, and the car runs perfectly now.
Justin Young –
Received the unit quickly, it was truly plug-and-play, and saved me a bundle compared to dealer pricing—installation was a breeze thanks to clear communication.
Fast shipping and the ECM fit perfectly right out of the box; this saved me tons over the dealer’s quote and made the whole process hassle-free.
Super quick turnaround and the unit was ready to go—plugged it in with no issues and saved a lot compared to dealer costs, definitely recommend.
The part arrived fast and worked immediately, cutting my expenses drastically versus the dealer; their professional support made installation smooth as well.
Shipping was speedy, the ECM was plug-and-play with no fuss, and the savings over dealership prices were significant—great all-around experience.
Logan Hamilton –
Fast shipping and the ECU came perfectly programmed for my 2005 Cadillac CTS—installation was a breeze. The team answered all my questions promptly, making the whole process stress-free.
Isaac Turner –
I was really impressed with how smoothly everything went when I ordered this ECU for my 2005 Cadillac CTS. The unit came fully programmed to my VIN, so installation was literally plug-and-play. Shipping was surprisingly fast and free, which was a nice bonus given how urgent the repair was. The team kept me informed throughout the process and answered all my questions promptly, making the whole experience stress-free. Since installing it, my car runs like new again, with no hiccups at all. Highly recommend this service if you need a reliable ECM replacement.
Blake Walker –
I was really impressed with how quickly the ECM arrived after ordering. Installation was straightforward since the unit was fully plug-and-play and came VIN programmed, which saved me a ton compared to dealer pricing. The communication from the seller was clear and helpful throughout the process, making the whole experience hassle-free. Everything worked perfectly right away, so I highly recommend this service.