Programmed 2017 Verano ECM Engine Control Module 12667189 | VIN Matched

Is Your GM Vehicle Running Rough, Stalling, or Showing a Check Engine Light?

If you’re dealing with frustrating engine problems in your 2017 Buick Verano or another compatible GM model, a failing Engine Control Module (ECM) is often the culprit. I’ve been diagnosing these systems for over two decades, and I’ve seen firsthand how a faulty ECM can cause a cascade of issues that seem unrelated, from poor fuel economy to a car that won’t start at all. This isn’t just a part; it’s the brain of your engine, and when it malfunctions, your vehicle’s performance and reliability suffer.

This replacement ECM, part number 12667189, is the definitive solution. We take the guesswork and high costs out of the repair by programming the module specifically to your vehicle’s VIN before it ships. This means it arrives at your door with the latest GM software updates already installed, ready for a straightforward installation.

Expert Pro Tip: Avoid a Common Misdiagnosis. Just last month, a 2017 Chevy Equinox (which uses this exact ECM) was brought to my shop. The owner had already replaced the throttle body twice, trying to fix a persistent P2135 error code. The real problem wasn’t the throttle body; it was a failing driver circuit inside the original ECM. A simple check with a multimeter on the ECM connector pins confirmed our suspicion. By replacing the ECM, we solved the problem permanently. Always consider the ECM as a potential cause for recurring sensor or component-specific codes.

Symptoms of a Failing Engine Control Module

A bad ECM can manifest in many ways. If you’re noticing any of the following, it’s a strong indicator that your engine’s computer needs attention:

• ✔ Persistent Check Engine Light (CEL) that won’t clear
• ✔ Engine stalling, stuttering, or misfiring
• ✔ Noticeable decrease in fuel efficiency
• ✔ Difficulty starting the engine or a complete no-start condition
• ✔ Harsh or erratic automatic transmission shifting
• ✔ Communication errors with diagnostic scan tools

Why Our 2017 Verano ECM is the Smart Choice

Getting your vehicle back to factory-spec performance is our priority. This module is more than just a replacement part; it’s a complete, ready-to-install solution. By programming it to your VIN, we ensure all the specific parameters and software for your vehicle’s options are correctly loaded. This eliminates the need for an expensive trip to the dealership for programming, saving you time and hundreds of dollars in labor.

Plug-and-Play Installation: No Dealer Visit Required

Installing your new ECM is a manageable job for a DIYer with basic tools. Follow these general steps to get your vehicle running smoothly again. (Note: The ECM location varies by model, as noted in the fitment list below.)

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10 minutes for the system to discharge.
2. Locate the ECM: On the Verano, Regal, Equinox, and Terrain, it’s typically in the LH (driver’s side) engine compartment. On the Traverse, Acadia, and Enclave, it’s often located behind the fan shroud.
3. Disconnect Connectors: Carefully release the locking tabs on the electrical wiring harnesses and pull them straight out from the module. Inspect the connectors for any corrosion or bent pins.
4. Remove the Old Module: Unbolt the old ECM from its mounting bracket.
5. Install the New Module: Mount your new, pre-programmed ECM and securely reconnect the wiring harnesses. You should feel a distinct click as they lock into place.
6. Reconnect Battery: Reattach the negative battery terminal. The vehicle may need to complete a drive cycle for all systems to fully recalibrate.

Guaranteed Fitment for Your Vehicle

This ECM is a direct replacement for part numbers 12667002, 12666070, and 12667189. It is guaranteed to fit the following vehicles and options:

• 2017 Buick Verano (Electronic Control Module)
• 2017 Buick Regal (Electronic Control Module; LH engine compartment)
• 2017 Buick Enclave (Electronic Control Module; behind fan shroud)
• 2017-2019 Cadillac XTS (Electronic Control Module; 3.6L, VIN 3 – 8th digit, opt LFX)
• 2017 Chevrolet Caprice (Electronic Control Module; 3.6L)
• 2017 Chevrolet Traverse (Electronic Control Module; behind fan shroud)
• 2017-2019 Chevrolet Impala (Electronic Control Module)
• 2017 Chevrolet Equinox (Electronic Control Module; LH engine compartment)
• 2017 GMC Acadia (Electronic Control Module; VIN J – 11th digit, Limited; behind fan shroud)
• 2017 GMC Terrain (Electronic Control Module; LH engine compartment)

Don’t let a faulty computer keep you off the road. Order today and provide your VIN at checkout to receive a fully programmed, ready-to-install ECM that will restore your vehicle’s performance and reliability.