Description
2009 Cadillac CTS 3.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2009 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




Gavin Miles –
I was really impressed with how smoothly everything went from start to finish. The ECU arrived quickly with free shipping, which was a nice bonus. They had already programmed it for my 2009 Cadillac CTS 3.6L, so installation was literally plug-and-play. After swapping it out, my car fired up immediately with no issues at all. I also appreciated their prompt responses when I had a couple of questions before ordering—made me feel confident about the whole process. Definitely a hassle-free experience!
Scott Lawrence –
I needed a replacement ECM for my 2009 Cadillac CTS and was really impressed with how smooth the whole process went. They provided professional VIN programming, so the unit was ready to go right out of the box—no additional setup required. Shipping was fast and the cost was very reasonable, which was a nice bonus. Throughout the purchase, their team was quick to answer my questions and kept me informed every step of the way. The car runs perfectly now, and I’m grateful for such a hassle-free experience.
Cameron Kelly –
I was really impressed with how quickly the ECM arrived after I placed my order—much faster than I expected. The unit was already VIN programmed, so installing it was as simple as plug-and-play, which saved me a ton of headache. Compared to the dealer’s quote, this service saved me a significant amount of money without sacrificing quality. The whole process felt very professional, and the seller kept me updated every step of the way. My 2009 Cadillac CTS is running smoothly again, and I couldn’t be happier with the experience.
Dominic Page –
I’m really impressed with how quickly this ECM arrived—shipping was much faster than I expected. The unit was exactly as described and plugged right into my 2009 Cadillac CTS without any issues. Installation went smoothly, and the VIN programming was spot on. Choosing this option saved me a ton of money compared to taking my car to the dealer, plus the communication throughout the process was excellent.
Justin Keller –
Received my programmed ECM quickly with free shipping, and it fit perfectly into my 2009 Cadillac CTS—highly recommend!
Logan Ramirez –
I purchased the 12623325 ECM for my 2009 Cadillac CTS and was really impressed with the professional programming service they provided. The unit arrived ready to install, which saved me a lot of hassle. Shipping was free and fast, and the communication throughout the process was excellent—they kept me informed every step of the way. The car runs perfectly now with no issues at all.
Michael Campbell –
Fast shipping and the unit was truly plug-and-play—installation was a breeze. This saved me a ton compared to dealer prices and the communication throughout was top-notch.