Is Your Chevrolet Spark Running Rough? The ECM Might Be the Culprit.
The Engine Control Module, or ECM, is the central computer of your 2014-2015 Chevrolet Spark. It’s responsible for managing everything from fuel injection and ignition timing to emissions systems and transmission shifting. When this critical component begins to fail, it can cause a wide range of frustrating and often confusing symptoms. You might be experiencing a persistent check engine light, poor acceleration, random stalling, or a complete no-start condition. These issues not only affect your driving experience but can also lead to decreased fuel economy and potential damage to other engine components if left unaddressed.
The Direct-Fit Solution: A VIN-Programmed 2014-2015 Spark ECM
Don’t let a faulty computer keep you off the road. This Engine Control Module, part number 12643636, is the definitive solution to restore your vehicle’s performance and reliability. Unlike a generic part from a salvage yard, this module is not just a piece of hardware; it’s a complete, ready-to-install solution. The key is our professional programming service. Before we ship the unit, we use your vehicle’s unique Vehicle Identification Number (VIN) to flash the module with the latest, most stable software updates directly from General Motors. This critical step ensures that the ECM communicates perfectly with your Spark’s other electronic systems, including the transmission control module, anti-lock brake system, and security immobilizer.
Common Symptoms of a Failing ECM
If you’re unsure whether your ECM is the problem, compare your vehicle’s behavior to this list of common failure indicators. A faulty module is often the root cause of these issues:
- ✔ Persistent and illuminated Check Engine Light (CEL)
- ✔ Engine stalling or cutting out unexpectedly while driving
- ✔ Difficulty starting the engine or a complete no-start condition
- ✔ Noticeable decrease in fuel efficiency
- ✔ Rough idling or engine misfires
- ✔ Poor acceleration and overall lack of engine power
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Communication errors with diagnostic scan tools
Guaranteed Compatibility and Simple Installation
This module is a direct replacement for part number 12643636 and is also compatible with several other GM part numbers, including 12668866, 12668994, 12663405, 12670335, 22819494, and 12692200. While this listing is specifically for the 2014-2015 Spark ECM, its versatile architecture means it also fits a wide array of other GM vehicles such as the Cruze, Sonic, Trax, Encore, Volt, and even some Silverado and Express van models. Please verify the part number to ensure a perfect match for your application. Installation is straightforward for a knowledgeable DIYer or any professional mechanic. Once installed, you may need to perform a simple security relearn procedure, which can typically be done without special tools and instructions are readily available online.
Frequently Asked Questions
What do I need to do after I purchase this ECM?
After you place your order, we will need your vehicle’s 17-digit VIN to program the module. Please have it ready to send to us via email or message. We cannot ship the part until it has been programmed with your specific vehicle information.
Is this a plug-and-play part?
Because we program it to your VIN, it is as close to plug-and-play as possible. In some cases, a simple ‘security relearn’ or ‘CASE relearn’ procedure may be required after installation. This can often be done without a scan tool and synchronizes the new ECM with your vehicle’s anti-theft system.
Will this ECM fix my car’s problem for sure?
This module will correct any issues directly caused by a faulty ECM. However, it’s crucial that your vehicle has been properly diagnosed. This part will not fix problems related to other faulty components like sensors, wiring, or mechanical failures.
Does this part come with a warranty?
Yes, all of our electronic modules come with a standard warranty against defects. Please see our warranty policy page for complete details and coverage information.
Is this a new or used part?
This is a high-quality, tested, and fully functional used OEM component. Each unit is inspected and verified to be in excellent working condition before being programmed and shipped.