Description
2006 Cadillac STS 3.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2006 Cadillac STS 3.6L 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 require key programming after installation. This is normal.
For a 100% plug-and-play solution, we recommend using our full cloning service. We transfer all security data to the replacement unit.
A prepaid shipping label will be emailed to you. Allow you to mail in your original computer to us for full cloning.
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



Max Peterson –
Fast shipping and the plug-and-play programming made installation a breeze. Highly recommend for anyone needing a reliable ECM.
Jordan Douglas –
I purchased the 2006 Cadillac STS 3.6L ECM from this seller and was very impressed with the professional programming service they provided. The unit arrived VIN programmed and ready to install, which saved me a lot of hassle. Shipping was reasonable and the whole process was smooth, with timely updates whenever I had questions. Overall, excellent quality and a stress-free experience.
Justin Jenkins –
I was really impressed with how smooth the whole process was. The 2006 Cadillac STS ECM arrived quickly, and it was already VIN programmed, so installation was basically plug-and-play. I had a few questions before ordering, and their support team responded right away, which made me feel confident in my purchase. The car started up perfectly with no issues, and the free shipping was a nice bonus. Overall, a hassle-free experience that saved me a lot of time and stress.