Description
2011 Cadillac STS 3.6L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2011 Cadillac STS 3.6L AT gas models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with our cloning service.
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:
Complete communication & CAN-bus verification
Sensor input/output and signal integrity checks
Injector & ignition pulse simulation
Power, ground, and load-circuit analysis
Flash memory integrity and checksum validation
Thermal and voltage-stress testing to confirm reliability
Important Note
Some vehicles with IMMO or PATS may require key programming after installation. This is normal.
For a 100% plug-and-play solution with no relearns, your original ECU must be sent in for cloning. We transfer all security data to the replacement unit.
👉Add the cloning service as a bundle at checkout — $300 CAD / $215 USD
A prepaid shipping label will be emailed to you.
If cloning is not selected, the ECU will be VIN programmed, and a key relearn will be required after installation.
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.