Description
2016 Cadillac XTS 3.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2016 Cadillac XTS 3.6L 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
Matthew Cooper –
This ECM arrived quickly and installed effortlessly—my Cadillac runs like new again. Super impressed with how seamless the whole process was!
Ethan King –
I was a bit nervous about ordering an ECM/ECU online, but this one for my 2016 Cadillac XTS fit perfectly and was already programmed to my VIN, which saved me so much hassle. Installation was straightforward—I just plugged it in and everything fired up without a hitch. The shipping was quick too, arriving well before I expected. I’m really impressed by how smooth the whole process went, and the car runs just like new now. Definitely a solid product that I would recommend to anyone needing a replacement module.
When my original ECU started acting up, I found this VIN programmed unit for my 2016 Cadillac XTS and decided to give it a try. I can honestly say the swap was seamless—no extra tuning or programming needed because it came ready to go. It’s comforting to know that the unit is plug and play, and it saved me a ton of time and money on diagnostics. The seller was responsive when I had a quick question about installation, which made
Anthony Peterson –
This ECM arrived quickly and was exactly as described, pre-programmed to my vehicle’s VIN which saved me a ton of hassle. Installation was straightforward and truly plug-and-play, no extra tweaks needed. After swapping it in, my 2016 Cadillac XTS runs smoothly with no error codes—definitely worth the purchase. The support team was also responsive when I had a couple of questions before ordering.