Description
2011 Cadillac STS 3.6L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2011 Cadillac STS 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
Scott Richardson –
I was a bit nervous about replacing the ECM on my 2011 Cadillac STS, but this unit made the whole process surprisingly easy. It arrived quickly and was already VIN programmed, so I just plugged it in and everything fired up without a hitch. I especially appreciated how seamless the install was—no extra coding or trips to the dealer required. The car runs perfectly now, and I haven’t had any issues since the swap. Definitely a stress-free fix for anyone dealing with ECM troubles.
Brandon Rogers –
Installed this ECM in minutes and my Cadillac runs perfectly again—seriously seamless and fast delivery. Couldn’t be happier with how smooth everything went!
Oliver Clark –
This ECM arrived quickly and was exactly as described, already programmed to my vehicle’s VIN which made installation straightforward. Plugging it in was smooth with no additional coding required, and my Cadillac fired right up without a hitch. I appreciated the clear instructions and the professional support team who answered my questions promptly. Overall, a reliable replacement that saved me a lot of hassle.