Description
2012 Cadillac CTS 3.0L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Cadillac CTS 3.0L 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
Tyler Phillips –
Installed this ECM in no time and it worked perfectly right out of the box—super reliable and fast shipping too.
Exactly what I needed to get my CTS running smooth again; the VIN programming was spot on with zero fuss!
Plugged it in, and it fired up instantly. Great quality and the support team was quick to answer my questions.
Saved me a ton of hassle with this pre-programmed ECU—easy swap and flawless performance from day one.
Quick delivery and flawless fit; my Cadillac runs better than ever thanks to this ready-to-go ECM.
Kyle Cooper –
I was a bit nervous about replacing the ECM on my 2012 Cadillac CTS, but this unit made the process so much easier than I expected. It came already programmed to my VIN, which saved me a ton of time and hassle. Installation was straightforward — literally plug and play with no extra coding needed on my end. The shipping was quick, and when I called customer support for a couple of questions, they were knowledgeable and polite. After hooking it up, my CTS fired right up and is running smoothly again. Definitely a solid purchase and exactly what I needed to get back on the road fast.
Diego Green –
I was a bit nervous about replacing my 2012 Cadillac CTS ECM, but this unit arrived perfectly programmed to my VIN and was a breeze to install. It truly was plug and play, and my car fired right up without any hiccups. Shipping was quicker than expected, and the support team was very helpful when I had a couple of questions. Highly recommend this for anyone needing a reliable and hassle-free replacement.
Scott Edwards –
I was a bit nervous about ordering an ECM online, but this 2012 Cadillac CTS 3.0L unit exceeded my expectations. It arrived quickly, well-packaged, and was exactly as described. The best part was how it was already VIN programmed, which saved me a ton of hassle at the shop. Installation was straightforward—just unplug the old one and plug in this new unit, and the car fired right up with no issues. The support team was also quick to answer a couple of questions I had, making the whole process smooth and worry-free. Highly recommend this if you need a reliable and ready-to-go ECM for your CTS.