Description
2008 Cadillac CTS 3.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2008 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 Campbell –
I was really impressed with how quickly this ECM arrived, and it was ready to install right out of the box with no extra programming needed. The unit fit perfectly in my 2008 Cadillac CTS and the whole replacement process went smoothly without any hiccups. Compared to the dealer’s price, this service saved me a significant amount of money, and their communication throughout the order was clear and professional. Overall, a great experience and highly recommended for anyone needing a reliable ECU replacement.
Harvey Poole –
Shipping was super fast and the unit was truly plug-and-play. Saved me a ton compared to dealer prices, and installation was a breeze.
Shane Foster –
Perfect fit for my 2008 CTS and came VIN programmed—plug-and-play was a breeze. Shipping was quick and reasonably priced too.
Russell Poole –
I was really impressed with how smooth the whole process was for getting this ECM for my 2008 Cadillac CTS. The unit arrived promptly with free shipping, which was a nice bonus. What stood out most was the plug-and-play setup—they had it programmed to my VIN before it even shipped, so installation was effortless. The quality feels top-notch, and I haven’t had a single issue since swapping it in. Overall, a hassle-free experience from start to finish.
Allan Jenkins –
I purchased the 12622141 ECM for my 2008 Cadillac CTS, and the process was seamless. The unit arrived quickly with free shipping, which was a nice surprise. The programming was already done according to my VIN, so installation was straightforward. Their customer support was very responsive, answering all of my questions promptly, which made me feel confident throughout the purchase.
Henry Hudson –
I was really impressed with how quickly this ECM arrived—shipping was faster than I expected. The unit was fully programmed to my car’s VIN and was truly plug-and-play, which made the whole installation process smooth and hassle-free. I ended up saving a ton of money compared to what the dealer quoted me, which was a huge relief. The customer service was also excellent; they kept me informed every step of the way. Overall, a great experience from start to finish.