Restore Your Cadillac’s Peak Performance and Reliability
Is your Cadillac XTS running rough, stalling unexpectedly, or displaying a persistent Check Engine Light? These frustrating issues often point to a failing Engine Control Module (ECM), the central computer of your vehicle. Don’t let a faulty module compromise the sophisticated ride you expect from your Cadillac. This direct-fit ECM is the definitive solution, arriving at your door fully programmed to your vehicle’s specific VIN, ensuring a seamless and effective repair that gets you back on the road with confidence.
Common Symptoms & Your Solution
A failing ECM can cause a wide range of confusing and intermittent problems. If you’re experiencing any of the following, this pre-programmed module is your answer:
- Persistent Check Engine Light (CEL)
- Engine misfiring, stumbling, or rough idling
- Poor acceleration and reduced engine power
- Decreased fuel economy
- Erratic or harsh transmission shifting
- Intermittent stalling or no-start conditions
- Communication error codes (U-codes) or internal processor failure codes (like P0601 or P0606)
By replacing your old unit with this professionally programmed 2017-2019 Cadillac XTS 3.6L ECM 12667189, you are not just swapping a part; you are restoring the precise factory-calibrated control your vehicle needs to operate flawlessly.
Features & Benefits
- ✔ Ready to Install, No Dealer Visit: This ECM comes fully programmed to your vehicle’s VIN with the latest GM software updates. This eliminates the need for expensive and time-consuming programming at a dealership.
- ✔ Guaranteed Compatibility: A direct replacement for part numbers 12667189, 12667002, and 12666070, ensuring a perfect fit and function for your Cadillac XTS and other compatible GM models.
- ✔ Restored Drivability: By installing a correctly functioning and updated module, you’ll restore the smooth acceleration, crisp shifting, and optimal fuel efficiency your luxury sedan was designed to deliver.
- ✔ Plug-and-Drive Simplicity: Once you receive the module, the installation is a straightforward process. In most cases, no complicated relearn procedures are required, saving you time and hassle.
- ✔ Backed By Our Confidence Guarantee: This unit is backed by our one-year replacement warranty, giving you complete peace of mind with your purchase.
Expert Insight: The Critical Role of VIN Programming
In a modern vehicle like your Cadillac, the ECM is more than just an engine controller; it’s the conductor of an orchestra of electronic modules. It constantly communicates with the Transmission Control Module (TCM), Body Control Module (BCM), ABS, and more. Our VIN-specific programming is not just a convenience—it’s essential. We flash the module with your car’s unique identity, ensuring all systems communicate in perfect harmony. This prevents a cascade of new error codes and drivability issues that can occur with improperly programmed or generic units, guaranteeing a successful repair the first time.
Take the guesswork out of your repair. Ordering this pre-programmed 2017-2019 Cadillac XTS 3.6L ECM 12667189 is the most reliable and efficient way to solve complex electronic issues and restore the refined driving experience you deserve.
Frequently Asked Questions
Do I need to have this ECM programmed?
No. We handle all the programming for you before shipment. Simply provide us with your vehicle’s 17-digit VIN during or after checkout, and the module will arrive ready for installation.
How do I find and provide my VIN?
Your VIN can be found on your vehicle’s registration, insurance card, or on the driver’s side of the dashboard visible through the windshield. You can send it to us through the designated order notes field or reply to your order confirmation email.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM, this part will resolve the issue. It is crucial to have your vehicle properly diagnosed to ensure the ECM is the root cause of the problem before ordering.
Is this a difficult part to install?
For someone with moderate mechanical experience, the physical installation is typically straightforward. The ECM is usually located in the engine compartment. However, we always recommend consulting a service manual for your specific vehicle or having the part installed by a qualified professional technician.
What other part numbers does this module replace?
This ECM is a direct, compatible replacement for part numbers 12667002, 12666070, and 2017-2019 Cadillac XTS 3.6L ECM 12667189. It is guaranteed to work if your original module carries one of these numbers.
What other vehicles does this part fit?
Besides the XTS, this ECM is also compatible with a range of 2017-2019 GM vehicles including the Impala, Traverse, Enclave, Acadia, Regal, and more. Please verify the part number on your original unit to confirm fitment.