Is Your Chevrolet Spark Running Rough? The ECM Might Be the Culprit.
If your 2014 or 2015 Chevrolet Spark is experiencing frustrating issues like a persistent check engine light, stalling, poor fuel economy, or a complete no-start condition, a failing Engine Control Module (ECM) is a likely cause. The ECM is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it fails, the entire system can become unreliable, leaving you stranded and facing a complex repair.
This is a direct-replacement Engine Control Module for your vehicle, identified by part number 12668866 and interchangeable with several other part numbers including 12668994, 12643636, 12663405, 12670335, 22819494, and 12692200. We take the guesswork out of the repair by pre-programming the module to your vehicle’s specific Vehicle Identification Number (VIN). This ensures that all systems, including the anti-theft immobilizer and vehicle-specific options, function exactly as they did from the factory.
Diagnosing a Faulty 2014-2015 Spark ECM
A failing engine computer can manifest in numerous ways, often mimicking other component failures. If you’re experiencing a combination of the following symptoms, it’s time to consider the ECM as the root cause. This module is the definitive solution for restoring your vehicle’s performance and reliability.
Common Symptoms of a Failing ECM
- ✔ Check Engine Light: The light is illuminated, and you may have codes related to sensor circuits, communication errors (U-codes), or processor faults.
- ✔ No-Start or Hard-Start: The engine cranks but refuses to start, or takes an excessively long time to fire up.
- ✔ Poor Engine Performance: Noticeable loss of power, hesitation during acceleration, and rough idling.
- ✔ Reduced Fuel Economy: The engine is no longer running efficiently, causing a sudden and significant drop in your MPG.
- ✔ Erratic Transmission Shifting: The ECM plays a role in transmission control, and a fault can cause harsh or delayed shifts.
- ✔ Intermittent Stalling: The vehicle may stall for no apparent reason, either while driving or at idle.
The Importance of VIN Programming
Modern vehicles are complex, and the ECM is tailored to the exact specifications of your car. Simply swapping a module from another vehicle will not work due to the integrated anti-theft systems (immobilizer) and specific software for your engine, transmission, and options. Our process eliminates this headache. When you provide your VIN, we flash the module with the latest GM-certified software for your exact vehicle. This makes the installation process as simple as possible, often only requiring a basic security relearn procedure that you can perform at home.
This module is a versatile component used across a wide range of GM vehicles. While it is a perfect fit for the 2014-2015 Spark ECM, its compatibility extends to models like the Cruze, Sonic, Trax, Encore, and even larger vehicles like the Silverado and Express vans. The key is the VIN-specific programming, which configures this hardware to operate flawlessly for your particular application.
Frequently Asked Questions
Do I need to program this ECM?
No. We handle the programming for you before shipment. Simply provide your vehicle’s VIN during or after checkout, and we will flash the module with the correct, updated software for your specific car.
What is an ECM and what does it do?
The Engine Control Module (ECM) is your car’s main computer. It controls and monitors the engine’s critical functions, including fuel mixture, ignition timing, idle speed, and emissions systems, to ensure optimal performance and efficiency.
Is any special procedure needed after installation?
In most cases, you will need to perform a simple security relearn procedure, also known as a key relearn. This process syncs the new ECM with your vehicle’s anti-theft system and keys. It typically involves turning the key to the ‘ON’ position for 10-15 minutes and can be done without any special tools. Instructions are readily available online for your specific model.
How do I find my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on the driver’s side of the dashboard, visible through the windshield.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM, then yes, this part will resolve the issue. However, it’s crucial to ensure the underlying problem isn’t a separate sensor or mechanical fault. This module corrects issues originating from the computer itself.