Restore Your Cadillac’s Signature Smoothness
Is your Cadillac XTS not performing with the quiet confidence and seamless power you expect? Nagging check engine lights, rough idling, unexpected stalling, or poor fuel economy can be incredibly frustrating, detracting from the luxury driving experience. These are often symptoms of a failing Engine Control Module (ECM), the central computer of your vehicle. This isn’t just a part; it’s the solution to restoring your peace of mind and your car’s sophisticated performance. We offer a reliable, direct-fit ECM that arrives programmed specifically for your vehicle, eliminating the most difficult part of the repair.
Common Symptoms of a Failing XTS ECM & Your Solution
A faulty ECM can manifest in various ways, often mimicking other component failures. If you’re experiencing any of the following, your engine computer is a likely culprit:
- Check Engine Light (CEL): Persistent illumination with codes related to module communication (e.g., U0100) or internal processor failure (e.g., P0606).
- Engine Performance Issues: Noticeable hesitation, misfires, reduced power, or a significant drop in fuel efficiency.
- Starting Problems: The engine may crank but refuse to start, or it may stall intermittently while driving.
- Erratic Transmission Behavior: Harsh or delayed shifting as the ECM fails to communicate properly with the transmission control module.
Our programmed 2017-2019 Cadillac XTS ECM is the definitive solution. We take your vehicle’s unique VIN and flash this module with the latest, most stable software updates from GM. This ensures that when the part arrives, it’s ready to be installed, communicating perfectly with all of your Cadillac’s systems right out of the box.
Features & Benefits
- ✔ VIN-Specific Programming: Arrives ready for installation with no need for an expensive trip to the dealership for programming. This is a true plug-and-play solution.
- ✔ Latest GM Software: We load the newest updates to ensure your engine and transmission operate at peak efficiency and performance.
- ✔ Restored Drivability: Eliminates common issues like stalling, misfires, and poor fuel economy, bringing back your Cadillac’s smooth and responsive feel.
- ✔ Guaranteed Compatibility: A direct replacement for part numbers 12667002, 12666070, and 12667189, ensuring a perfect fit and function for your 2017-2019 Cadillac XTS and other compatible GM models.
- ✔ This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
Many people don’t realize that a modern ECM is more than just a generic part. It’s coded specifically to your car’s VIN, controlling everything from the anti-theft system (immobilizer) to fuel injector timing and transmission shift points. Installing an unprogrammed module from a junkyard or another vehicle will, at best, not work, and at worst, could cause further system conflicts. Our professional programming service is what makes this a viable, hassle-free repair, saving you hundreds in dealer labor and diagnostic fees.
Take control of your repair and get your vehicle back to its optimal state. With our programmed 2017-2019 Cadillac XTS ECM, you’re not just buying a part; you’re investing in a reliable, straightforward solution that restores your confidence on the road.
Frequently Asked Questions
Is this ECM really plug-and-play?
Yes. Because we program the module to your specific VIN before shipping, it will integrate with your vehicle’s existing systems. In some cases, a simple, 10-minute security relearn procedure may be required, which you can easily do yourself without any special tools. We provide instructions for this process.
How do I provide my vehicle’s VIN?
After placing your order, simply add your 17-digit VIN to the ‘notes’ section at checkout, or reply to your order confirmation email with the information. We cannot ship your part until we have your VIN to complete the programming.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the ECM (common codes include P0600-P0606), this part is the correct fix. However, we always recommend having your vehicle properly diagnosed to ensure the ECM is the root cause of the problem before ordering.
Does this fit other vehicles besides the Cadillac XTS?
Yes, this ECM is compatible with a range of 2017-2019 GM vehicles, including the Impala, Traverse, Enclave, Acadia, Regal, Equinox, and more. Please check the fitment list on this page to confirm compatibility with your specific model and engine.
My original part number is 12666070. Will this work?
Absolutely. Part number 12667002 is the updated, compatible replacement for older part numbers including 12666070 and 12667189. It will function identically and contains the most current software.
What is the warranty on this part?
This unit is backed by our one-year replacement warranty, giving you confidence in your purchase.