Is Your Vehicle Running Poorly? The ECM Might Be the Culprit.
Dealing with a persistent check engine light, erratic engine behavior, or a car that just won’t start can be incredibly frustrating. These are often symptoms of a failing Engine Control Module (ECM), the central computer that manages your vehicle’s engine performance, fuel economy, and emissions. When this critical component falters, it can lead to a cascade of problems that are difficult to diagnose. This replacement ECM, part number 12630789, is the definitive solution for a wide range of GM vehicles, including the Chevrolet Aveo, Cruze, Sonic, and Pontiac G3/Wave.
Symptoms of a Failing GM Electronic Control Module
If your vehicle is experiencing any of the following issues, a faulty ECM could be the underlying cause. A failing computer can mimic many other mechanical or sensor-related problems, so it’s crucial to consider it as a potential point of failure.
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Engine misfires, stumbling, or hesitation during acceleration.
- ✔ Unexplained drop in fuel efficiency.
- ✔ Rough or unstable idling.
- ✔ Automatic transmission shifting erratically or harshly.
- ✔ The vehicle cranks but refuses to start.
- ✔ Loss of communication with diagnostic scan tools.
- ✔ Intermittent electrical problems that seem to have no source.
The Plug-and-Play Solution for Your 2009-2010 Wave ECM
Replacing an ECM isn’t just about swapping hardware. A new module must be programmed with your vehicle’s specific Vehicle Identification Number (VIN) and loaded with the latest factory software to function correctly. This process typically requires an expensive trip to the dealership. We eliminate that step. When you purchase this module, we handle all the programming for you. Simply provide us with your VIN during or after checkout, and our technicians will flash the unit with the most current GM updates tailored to your exact vehicle configuration. The module you receive will be ready for installation right out of the box, restoring your vehicle’s performance and reliability without the need for additional dealer programming.
Direct Replacement for Multiple Part Numbers
This ECM is a direct, compatible replacement for a range of original equipment part numbers, ensuring a perfect fit and function. It is fully compatible with the following part numbers:
- 12679199
- 12642927
- 12636386
- 12621466
- 12630789
Guaranteed Vehicle Compatibility
This Electronic Control Module is confirmed to fit the following vehicles. Please ensure your make, model, and year match the list below for guaranteed compatibility.
- CHEVROLET AVEO: 2009, 2010, 2011
- CHEVROLET CRUZE: 2011, 2012 (1.8L Engine)
- CHEVROLET SONIC: 2012 (1.8L Engine)
- CHEVROLET SPARK: 2013
- CHEVROLET TRAX: 2013, 2014 (1.8L Engine)
- PONTIAC G3: 2009, 2010
- PONTIAC WAVE: 2009, 2010
Frequently Asked Questions
How do I provide my vehicle’s VIN?
You can add your 17-digit VIN in the ‘notes’ section during checkout. If you forget, don’t worry! We will contact you via email after your purchase to request the VIN before we program and ship the module.
Is this part difficult to install?
The physical installation is typically straightforward for someone with basic mechanical skills. It usually involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. Since our module comes pre-programmed, you avoid the most difficult part of the job—the software configuration.
Will I need to perform any additional programming after installation?
No, this ECM is shipped fully programmed and ready to install. In some vehicles, a simple ‘security relearn’ procedure may be required, which syncs the module to your car’s anti-theft system. This procedure can typically be done yourself without any special tools and instructions can be easily found online.
What causes an ECM to fail?
ECM failure can result from several factors, including voltage overloads from a faulty alternator or shorted sensor, excessive heat and vibration over time, corrosion from water intrusion, or simply the age of the electronic components.
My original part number is slightly different. Will this still work?
Yes. Manufacturers often update part numbers over the years. This module is a verified replacement for all the part numbers listed in the description. As long as your vehicle’s make, model, and year are on our compatibility list, this part will function correctly.