Is Your Impala Suffering from Engine Problems?
A check engine light that won’t go away, rough idling, stalling, or a sudden drop in fuel economy are all classic signs of a failing Engine Control Module (ECM). As a technician with over two decades of experience, I’ve seen how a faulty ECM can turn a reliable car into a constant headache. It’s the brain of your engine, and when it starts to malfunction, nothing else works correctly. You’re not just buying a part; you’re restoring your vehicle’s performance and your peace of mind.
“A customer’s 2018 Impala came in last week with a persistent P0606 code (ECM Processor Fault) that wouldn’t clear, even after we verified all wiring and power/ground circuits were perfect. The car had intermittent stalling issues that were becoming dangerous in traffic. Swapping in a pre-programmed ECM like this one resolved the issue in under an hour, saving them a tow to the dealership and hundreds in programming fees.”
The Simple, Reliable Solution: A VIN-Programmed 2017-2020 Impala ECM
Forget the hassle and expense of a dealership visit. This ECM is the straightforward solution you need. We take the complexity out of the repair by programming the module specifically to your vehicle’s VIN before we ship it. This ensures it communicates perfectly with your car’s other systems right out of the box.
- ✔ VIN Programmed for You: We load the latest GM-certified software using your vehicle’s unique VIN. Simply provide it to us after your purchase.
- ✔ No Extra Fees: The price you see is the price you pay. All programming and software updates are included.
- ✔ Restored Performance: A new ECM can resolve issues like poor fuel mileage, hesitation, and incorrect transmission shifting.
- ✔ Direct-Fit Replacement: Guaranteed to be a perfect physical and electronic match for your original module.
Easy Installation: Get Back on the Road Fast
Installing your new ECM is a job most DIYers can handle in their own driveway. For the 2017-2019 Impala, the module is typically located in the engine compartment, making access straightforward.
- Safety First: Disconnect the negative terminal from your car’s battery and wait 10-15 minutes for the system capacitors to discharge.
- Locate the ECM: Find the old module in the engine bay. It will have several large electrical connectors attached.
- Disconnect and Remove: Carefully unplug the wiring harnesses. They have locking tabs that need to be released. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed ECM into place. Reconnect the wiring harnesses, ensuring they click securely into place.
- Final Step: Reconnect the negative battery terminal. Your vehicle is now ready to start. In some cases, a security or crank relearn procedure may be required, which can be done with most professional-grade scan tools or by following a simple key cycle procedure.
Guaranteed Fitment & Compatibility
This module is a direct replacement for several part numbers, ensuring wide compatibility. Please verify your original part number is on this list or that your vehicle is listed below.
Replaces Part Numbers: 12667002, 12666070, 12667189
This part will fit these makes and models with these options:
- IMPALA 2017-2019 – Electronic Control Module
- ACADIA 2017 – Electronic Control Module; VIN J (11th digit, Limited), (behind fan shroud)
- CAPRICE 2017 – Electronic Control Module; 3.6L
- ENCLAVE 2017 – Electronic Control Module; (behind fan shroud)
- EQUINOX 2017 – Electronic Control Module; (LH engine compartment)
- REGAL 2017 – Electronic Control Module; (LH engine compartment)
- TERRAIN 2017 – Electronic Control Module; (LH engine compartment)
- TRAVERSE 2017 – Electronic Control Module; (behind fan shroud)
- VERANO 2017 – Electronic Control Module
- XTS 2017-2019 – Electronic Control Module; (3.6L), VIN 3 (8th digit, opt LFX)