Description
2010 Cadillac STS 4.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2010 Cadillac STS 4.6L 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:
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
This ensures a fully functional, reliable, plug-and-play module you can install with confidence.
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 — $200 CAD / $140 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
Henry Clark –
Installed in no time and the car fired right up—exactly what I needed. Shipping was quick and everything matched the description perfectly.
Jordan Scott –
This ECM arrived quickly and fit my 2010 Cadillac STS 4.6L perfectly. Installation was straightforward since it was truly plug-and-play, saving me a lot of time and hassle. After swapping it in, my car started right up with no issues, and the VIN programming was spot on. Overall, a reliable product that worked exactly as advertised.
Luis Wright –
I was a bit nervous about ordering an ECM online, but this 2010 Cadillac STS unit exceeded my expectations. The VIN programming was spot on, and it truly was plug-and-play—installation took less than an hour with no hiccups. My car fired up immediately, and everything runs smoothly now. Shipping was quicker than I anticipated, and the whole process felt very professional. Definitely a solid buy if you want to avoid dealership hassles.
Having struggled with a faulty ECM for weeks, I’m so relieved I found this replacement for my 2010 Cadillac STS. It arrived well-packaged and ready to go, matched perfectly with the VIN programmed before shipping. The install was straightforward; I simply plugged it in, and the car’s performance improved right away. I appreciated the quick responses from their support team when I had a couple of questions. This was an easy fix and saved me a lot of time and money.
This ECM for my 2010 Cadillac STS was exactly