Restore Peak Performance to Your Chevrolet Spark
Is your 2014-2015 Chevrolet Spark suffering from erratic behavior, poor fuel economy, or a persistent Check Engine Light? The Engine Control Module (ECM), often called the vehicle’s main computer, is the brain behind your engine’s operation. When it fails, it can cause a cascade of frustrating and difficult-to-diagnose issues. This genuine GM engine control module, part number 12670335, is the definitive solution to restore your vehicle’s factory performance, drivability, and efficiency.
Unlike solutions that require expensive trips to the dealership for programming, this module arrives at your door completely flashed with the latest GM software updates. We handle the complex programming for you; simply provide your vehicle’s VIN during checkout, and we will configure the module specifically for your Spark. This ensures a seamless installation process and immediate communication with all your vehicle’s other systems.
From the Diagnostic Bay
We had a 2015 Chevy Sonic (which uses a similar ECM) come into the shop with a bizarre issue. The owner complained of random stalling at stoplights and an occasional hard start, but no consistent check engine codes. We checked the fuel pump, sensors, and wiring, but everything seemed fine. After hours of diagnostics, we decided to monitor the live data from the ECM and noticed the injector pulse width was randomly dropping to zero. It was a classic sign of an internal ECM fault that wouldn’t always throw a specific code. Replacing the module with a pre-programmed unit like this one solved the problem instantly. It’s a reminder that sometimes the ‘ghost in the machine’ is the machine’s brain itself.
Symptoms of a Failing Engine Control Module
- ✔ Persistent and unexplained Check Engine Light (CEL)
- ✔ Engine stalling, stumbling, or hesitating during acceleration
- ✔ Noticeable decrease in fuel economy
- ✔ Difficulty starting the engine or a complete no-start condition
- ✔ Rough or erratic idling
- ✔ Transmission shifting problems or harsh shifts
- ✔ Failure to pass emissions testing
Why Choose Our 2014-2015 Spark Engine Module?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. The critical step of programming is performed by our technicians before the part is even shipped. This 2014-2015 Spark Engine Module is meticulously prepared to match your vehicle’s specific configuration, ensuring it works correctly right out of the box. It’s a direct-fit replacement for part number 12670335 and several other interchangeable part numbers, including 12668866, 12668994, and 12643636.
While this module is a primary fit for the 2014-2015 Chevrolet Spark, its versatile design allows it to be used in a wide range of other GM vehicles, such as the Cruze, Sonic, Trax, Encore, and even some Volt and ELR models. Please verify the part number and consult the detailed fitment list to ensure compatibility with your specific vehicle.
Installation Note: While this module is pre-programmed for your engine and emissions systems, some vehicles may require a simple security or key relearn procedure after installation. This can often be done without special tools and instructions are widely available online or in service manuals.
Frequently Asked Questions
Do I need to program this ECM?
No. We handle all the programming for you before we ship the part. Simply provide us with your vehicle’s 17-digit VIN when you place your order, and it will arrive ready for installation.
What are the most common signs my Spark’s ECM is failing?
The most common symptoms include a check engine light that won’t go away, poor engine performance like stalling or hesitation, reduced fuel mileage, and in severe cases, the engine not starting at all.
Where do I find my vehicle’s VIN?
Your VIN can be found on a metal plate on the driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Is this a simple plug-and-play installation?
Yes, for the most part. Because we program it to your VIN, it will communicate with your engine correctly. However, some GM vehicles may require a security relearn procedure to sync the new ECM with your keys. This is a standard anti-theft measure.
Will this part fit other vehicles besides the Chevy Spark?
Yes, this ECM is compatible with a wide variety of GM models, including certain years of the Cruze, Sonic, Trax, Encore, and various Express/Savana vans. Please check your original part number and our fitment list to confirm compatibility.