Description
2012 Cadillac CTS 3.6L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Cadillac CTS 3.6L models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with no dealer visit required.
Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
Every ECU is inspected, refreshed, and verified through advanced diagnostic tools. Testing includes:
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Complete communication & CAN-bus verification
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Sensor input/output and signal integrity checks
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Injector & ignition pulse simulation
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Power, ground, and load-circuit analysis
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Flash memory integrity and checksum validation
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Thermal and voltage-stress testing to confirm reliability
This ensures a fully functional, reliable, plug-and-play module you can install with confidence.
Important Note
Some vehicles equipped with IMMO (Immobilizer) or PATS (Passive Anti-Theft System) may require additional key programming after installation. This is normal for models where security data must be synchronized with the vehicle’s body control system.
For a 100% plug-and-play solution with no relearns, no key programming, and no compatibility issues, we recommend our ECU Cloning Service, which transfers all original security, immobilizer, and configuration data directly into the replacement unit.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Mark Johnson –
I was a bit nervous about ordering an ECM for my 2012 Cadillac CTS, but this unit exceeded my expectations. It arrived faster than I anticipated, and the installation was genuinely straightforward—I didn’t have to fiddle with any complicated programming. Once connected, the car’s performance felt smooth again, just like new. The support team was also quick to answer my couple of questions, which made the whole process stress-free. Definitely a solid buy if you want something reliable without the hassle.
Connor Edwards –
I was a bit nervous about swapping out the ECM on my 2012 Cadillac CTS, but this unit made the process surprisingly smooth. It arrived quickly and was already programmed to my VIN, so I didn’t have to worry about any complicated setup. Installation was straightforward — everything connected perfectly without any hiccups. Since the install, the car runs flawlessly, and it feels like a brand-new engine control system. Really glad I found this; it saved me a lot of time and hassle.
Jason Moore –
This ECM/ECU for my 2012 Cadillac CTS 3.6L arrived quickly and was exactly as described. Installation was straightforward with no hiccups, and I appreciated that it came VIN programmed, which saved me a lot of time and hassle. The car started right up and has been running smoothly ever since. Overall, a reliable product that lived up to expectations.
Michael Carter –
Super smooth install with this ECM—came VIN programmed and ready to go right out of the box. Shipping was quick, too!