Is Your GM Vehicle Acting Up? It Could Be The ECM.
The Engine Control Module (ECM), often called the engine computer, is the central command center for your vehicle’s engine. It controls everything from fuel injection and ignition timing to emissions systems and transmission shifting. When it starts to fail, it can cause a wide range of confusing and frustrating problems. If you’re experiencing erratic engine behavior, a persistent check engine light, or a no-start condition in your Cadillac XTS, Impala, or other compatible GM model, a faulty ECM is a very likely culprit. This replacement ECM, part number 12667189, is the definitive solution to restore your vehicle’s performance, reliability, and efficiency.
Common Symptoms of a Failing Engine Control Module
- ✔ Persistent Check Engine Light (CEL) on your dashboard.
- ✔ Engine misfires, stumbling, or rough idling.
- ✔ A sudden and unexplained drop in fuel economy.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ The engine stalls intermittently while driving or when stopped.
- ✔ Poor acceleration and overall lack of engine power.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Automatic transmission shifting issues or harsh shifts.
The Simple, Reliable Solution: A Pre-Programmed 2017-2019 XTS ECM
Don’t let a faulty engine computer keep you off the road. This ECM is a direct-fit replacement for your original unit, solving the complex electronic issues that plague a failing module. The most significant advantage we offer is our professional programming service. When you purchase this module, we flash it with the latest, most stable software updates directly from GM, using your vehicle’s specific Vehicle Identification Number (VIN). This ensures perfect compatibility and function right out of the box. You get a component that is ready to be installed, saving you from expensive towing bills and programming fees at a dealership.
This module is a direct replacement for part numbers 12667002, 12666070, and 12667189. Simply provide your VIN during checkout, and our technicians will handle the rest, ensuring the module you receive is perfectly matched to your vehicle’s factory specifications and options.
Guaranteed Fitment for Your GM Vehicle
This Engine Control Module is verified to fit the following vehicles:
- Cadillac XTS: 2017-2019 (3.6L, VIN 3 – 8th digit, opt LFX)
- Chevrolet Caprice: 2017 (3.6L)
- Chevrolet Traverse: 2017
- Chevrolet Impala: 2017-2019
- Chevrolet Equinox: 2017
- GMC Acadia: 2017 (Limited, VIN J – 11th digit)
- GMC Terrain: 2017
- Buick Enclave: 2017
- Buick Regal: 2017
- Buick Verano: 2017
Please confirm your part number and vehicle fitment before ordering. If you have any questions, our support team is ready to help you verify compatibility.
Frequently Asked Questions
Do I need to get this ECM programmed?
No. This ECM comes fully programmed to your vehicle’s VIN before it is shipped. It is ready for installation upon arrival, saving you a trip to the dealership.
Where do I provide my VIN?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. We will provide clear instructions on how to do this. We cannot program and ship the module without it.
How do I find my VIN?
Your VIN can be found on a metal plate on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this fix my car’s problem for sure?
This part is a direct solution for a failed ECM. While the symptoms listed are very common for ECM failure, we always recommend a proper diagnosis by a qualified mechanic to confirm the ECM is the root cause of your issue before purchasing.
Is any additional setup required after installation?
In many cases, the module is plug-and-play. However, some GM vehicles may require a simple security relearn procedure (also known as a CASE relearn or anti-theft relearn) to sync the new ECM with your vehicle’s keys and anti-theft system. This procedure can often be performed without special tools and instructions can be readily found online for your specific model.
What other part numbers does this module replace?
This ECM, part number 12667189, is a direct replacement for part numbers 12667002 and 12666070 as well.