Is Your Chevy Spark Running Rough or Showing a Check Engine Light?
If you’re dealing with frustrating issues like a persistent check engine light, poor fuel mileage, stalling, or a no-start condition in your 2014-2015 Chevrolet Spark, a failing Engine Control Module (ECM) is often the culprit. As the brain of your vehicle, the ECM controls everything from fuel mixture and ignition timing to transmission shifting. When it fails, it can cause a cascade of problems that are difficult to diagnose and expensive to fix at a dealership.
I’ve seen it countless times in my 20+ years in the shop. A customer brings in a car that’s had multiple sensors replaced, yet the problems persist. The real issue lies with the computer itself. This is your direct, reliable solution to get your Spark back to factory-spec performance without the dealership hassle or cost.
Get Back on the Road Fast with a VIN-Programmed ECM
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine GM ECM and program it specifically to your vehicle’s unique Vehicle Identification Number (VIN). This critical step ensures all systems communicate correctly and that your engine operates with the latest, most efficient software updates from General Motors. You get a part that is truly plug-and-play.
Common Symptoms of a Failing 2014-2015 Spark Engine Control Module:
- โ Persistent Check Engine Light (CEL) with various codes
- โ Vehicle won’t start or is hard to start
- โ Rough idling or stalling
- โ Noticeable decrease in fuel economy
- โ Hesitation or stumbling during acceleration
- โ Failed emissions or smog test
- โ Communication error codes with a scan tool
Real-World Diagnosis: A Customer Story
A customer’s 2015 Spark came into my shop last week with these exact symptoms: a flashing check engine light and a severe misfire under load. The owner had already replaced the spark plugs and ignition coil pack based on advice from an auto parts store, but the problem didn’t go away. After connecting my professional scan tool, I noticed the injector pulse width for cylinder 3 was erratic. It wasn’t a bad injector; the driver circuit inside the original ECM was failing. We installed one of our VIN-programmed modules, and the car ran perfectly immediately. This saved the customer from chasing phantom issues and wasting more money on unnecessary parts.
Plug-and-Play Installation: No Dealer Visit Required
One of the biggest benefits of our service is the pre-programming. This allows you or your mechanic to install the module without needing expensive, specialized dealership tools for flashing or key relearning. The process is straightforward:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the ECM: On the 2014-2015 Spark, the ECM is typically located in the engine bay, often near the battery or firewall.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be released. Then, unbolt the old module from its mounting bracket.
- Install the New ECM: Mount the new module securely and reconnect the electrical harnesses. Ensure they click into place firmly.
- Reconnect Battery: Reattach the negative battery terminal. The vehicle may require a security relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes. Instructions will be provided.
Expert Pro Tip: Before installing your new ECM, take a moment to inspect the main engine wiring harness, especially where it runs near the module and exhaust components. Over time, heat and vibration can cause wires to chafe and short out. A shorted sensor wire (like for an O2 sensor or crank sensor) can damage a new module instantly. A quick visual inspection can prevent a costly mistake.
Guaranteed Compatibility
This Engine Control Module is a direct replacement for a wide range of GM vehicles, ensuring OEM-level function and reliability. It is compatible with the following part numbers:
Part Numbers: 12663405, 12668866, 12668994, 12643636, 12670335, 22819494, 12692200
While this listing is focused on the 2014-2015 Spark, this versatile module also fits many other models, including the Cruze, Sonic, Trax, Encore, Volt, and even some Silverado and Express vans. This broad application is a testament to its proven design and reliability across the GM platform. Simply provide your VIN at checkout, and we’ll handle the rest, ensuring a perfect match for your vehicle’s specific configuration.