Description
2005 Cadillac CTS 3.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2005 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
Diego Collins –
I was really impressed with how smoothly the whole process went. The ECU arrived faster than I expected, and it was already VIN programmed, which made installation a breeze. The team was very responsive whenever I had questions, keeping me updated every step of the way. Shipping was free, which was a nice bonus on top of the great service. After replacing the module, my CTS runs perfectly again—definitely worth it!
Isaac Miles –
I was really impressed with the quality of this ECM for my 2005 Cadillac CTS. It arrived quickly, and the best part was that it came fully programmed to my VIN, so installation was literally plug-and-play. The team kept me informed throughout the process, answering my questions promptly, which gave me a lot of confidence. Shipping was free and fast, which made the whole experience even better. After installing it, my car runs smoother than it has in years. Highly recommend!
Steven Douglas –
I ordered the 12595154 ECM for my 2005 Cadillac CTS and was really impressed with how smoothly everything went. The module arrived quickly with free shipping, and it was already VIN programmed, so installation was straightforward and hassle-free. The team was very responsive when I had questions and kept me informed throughout the process, which gave me a lot of confidence. Overall, excellent quality and service—highly recommend.
Steven Phillips –
The ECU arrived quickly with free shipping, and the plug-and-play setup was flawless—car fired right up without any issues.
Excellent communication throughout the process, and their professional programming service made installing the PCM stress-free and fast.