Is Your Impala Running Rough, Stalling, or Showing a Check Engine Light?
As a technician with over two decades of experience, I’ve seen countless drivers frustrated by persistent engine problems. Your 2017-2019 Impala is a reliable car, but when its brainโthe Engine Control Module (ECM)โstarts to fail, it can cause a cascade of confusing issues that leave you stranded. You might be experiencing inconsistent performance, poor fuel economy, or a car that simply refuses to start. This isn’t just an inconvenience; it’s a critical failure that needs a dependable solution.
The Dealership-Free Solution for Your 2017-2020 Impala ECM
Forget expensive dealership appointments and towing fees. We offer a direct, reliable fix. This Engine Control Module, part number 12667189, is the heart of your vehicle’s management system. We take the hassle out of the replacement process by programming the module specifically to your car’s Vehicle Identification Number (VIN) before we ship it. This means it arrives at your door with the latest GM software updates, ready for a straightforward installation.
Expert Pro Tip: Check Your Connectors First!
Before you even think about installing the new ECM, grab a flashlight and carefully inspect the wiring harness connectors that plug into the module. Over the years, I’ve seen dozens of cases where a perfectly good replacement ECM was damaged because of corroded, bent, or loose pins in the harness connector. A quick spray of electronics-safe contact cleaner and ensuring each pin is straight can save you from a costly misdiagnosis and a repeat repair.
Common Symptoms of a Failing ECM:
- โ Persistent Check Engine Light (CEL) that won’t clear.
- โ Engine stalling, sputtering, or misfiring, especially when warm.
- โ Complete no-start condition where the engine cranks but won’t turn over.
- โ Noticeable decrease in fuel efficiency.
- โ Unexplained transmission shifting problems or warning lights.
- โ Communication errors with diagnostic scan tools.
Plug-and-Play Installation: No Dealer Visit Required
We’ve made this process as simple as possible. Because we handle the programming, you won’t need any specialized tools or a trip to the dealer for coding. Follow these simple steps to get your Impala back in top shape:
- Safety First: Disconnect the negative terminal from your car’s battery and wait at least 15 minutes to allow all systems to discharge.
- Locate the ECM: On the 2017-2019 Impala, the ECM is typically located in the engine compartment. Consult your owner’s manual or a reliable service guide for the exact position.
- Disconnect and Remove: Carefully unplug the wiring harness connectors from the old module. Then, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed ECM in the same location. Securely reconnect the wiring harness connectors, ensuring they click into place.
- Reconnect Battery: Reattach the negative battery terminal. The vehicle may need to go through a brief idle relearn procedure, which usually involves starting the car and letting it idle for a few minutes.
Guaranteed Compatibility and Fitment
This module is a direct replacement for several part numbers, ensuring wide compatibility. Upon purchase, simply provide us with your vehicle’s VIN, and we’ll ensure it’s a perfect match.
Replaces Part Numbers: 12667189, 12667002, 12666070
This part will fit these makes and models with these options:
- IMPALA 2017-2019 Electronic Control Module
- CAPRICE 2017 Electronic Control Module; 3.6L
- TRAVERSE 2017 Electronic Control Module; (behind fan shroud)
- XTS 2017-2019 Electronic Control Module; (3.6L), VIN 3 (8th digit, opt LFX)
- ACADIA 2017 Electronic Control Module; VIN J (11th digit, Limited), (behind fan shroud)
- ENCLAVE 2017 Electronic Control Module; (behind fan shroud)
- REGAL 2017 Electronic Control Module; (LH engine compartment)
- VERANO 2017 Electronic Control Module
- EQUINOX 2017 Electronic Control Module; (LH engine compartment)
- TERRAIN 2017 Electronic Control Module; (LH engine compartment)