Description
2009 Cadillac CTS 3.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2009 Cadillac CTS 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




Kyle Russell –
Great unit for my 2009 CTS, arrived quickly with free shipping and was ready to install right out of the box. Their communication was top-notch and made the whole process hassle-free.
Matthew Carter –
I purchased the 2009 Cadillac CTS ECM from this seller and was impressed by how quickly my unit arrived with free shipping included. The ECU came VIN programmed and ready to install, which saved me a lot of hassle. Their customer support was also very responsive, answering all my questions promptly throughout the process. Overall, the quality and service exceeded my expectations.
Daniel Page –
I was really impressed with how smoothly everything went ordering this 2009 Cadillac CTS ECM. The unit arrived quickly and the fact that it was already VIN programmed saved me a lot of hassle. Shipping was free, which was a nice bonus considering the size and value of the part. When I had a few questions, their team responded promptly and clearly, making the whole process stress-free. Installation was straightforward, and the car has been running perfectly since. Definitely recommend this seller for anyone needing a reliable ECM replacement.