2009-2011 Aveo ECM Electronic Control Module 12636386 | Programmed

Is Your Car Plagued by Mysterious Electrical Problems?

Is your Chevrolet Aveo, Cruze, Sonic, or other compatible GM vehicle suddenly running poorly? Are you dealing with a persistent check engine light, stalling, poor fuel mileage, or a frustrating no-start condition? These are classic signs that the brain of your engine’s operating system, the Engine Control Module (ECM), may be failing. The ECM is responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it falters, the entire vehicle’s performance and reliability are compromised.

The Dealership Alternative That Saves You Time and Money

Replacing an ECM has traditionally meant a costly trip to the dealership for the part, programming, and labor. We eliminate that hassle. This ECM, part number 12636386, is a direct-fit replacement for your original unit. More importantly, it arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load the latest GM-certified software and calibrations, ensuring that the module communicates perfectly with all other systems in your car right out of the box. No expensive dealer-specific tools, no towing fees, just a straightforward solution.

Common Symptoms of a Failing ECM

• ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately.
• ✔ Engine misfires, stumbles, or runs rough for no apparent reason.
• ✔ A sudden, unexplained drop in fuel economy.
• ✔ The engine cranks but refuses to start.
• ✔ Hesitation or loss of power during acceleration.
• ✔ Harsh or erratic automatic transmission shifting.
• ✔ Cooling fans running constantly or not turning on at all.
• ✔ Inability for a scan tool to communicate with the module.

Your Complete 2009-2011 Aveo ECM Solution

This isn’t just a part in a box; it’s a comprehensive repair solution. By providing us with your VIN during checkout, you ensure that the 2009-2011 Aveo ECM you receive is precisely configured for your vehicle’s specific options, engine type, and emissions equipment. This VIN-matching process is critical for modern vehicles, as it ensures proper function of the anti-theft system, instrument cluster, and other integrated electronics. Our process uses the same software and updates available to GM dealerships, giving you factory-level performance and reliability.

Simple Installation Process

Replacing the ECM is a manageable job for a confident DIY mechanic or any professional technician. The module is typically located in the engine bay for easy access. After disconnecting the battery, simply unplug the wiring harnesses from the old unit, unbolt it, and install the new one in its place. Once the new module is connected and the battery is reconnected, you may need to perform a simple security relearn procedure, which pairs the new ECM to your existing keys. This procedure often requires no special tools and instructions can be found easily online for your specific model.

Guaranteed Compatibility

This module is a direct replacement for several original equipment part numbers, ensuring a perfect fit and function. It is compatible with the following part numbers: 12679199, 12642927, 12636386, 12621466, and 12630789.

This part will fit the following makes and models with the specified options:

• AVEO: 2009, 2010, 2011
• CRUZE: 2011, 2012 (with 1.8L engine)
• G3: 2009, 2010
• SONIC: 2012 (with 1.8L engine)
• SPARK: 2013
• TRAX: 2013, 2014 (with 1.8L engine)
• WAVE: 2009, 2010

Restore your vehicle’s performance and drive with confidence again. By choosing our pre-programmed 2009-2011 Aveo ECM, you are getting a reliable, cost-effective solution to get you back on the road quickly.