Restore Peak Performance to Your Chevrolet
Is your Chevrolet Aveo, Cruze, or Sonic suffering from frustrating issues like a persistent check engine light, rough idling, stalling, or a no-start condition? These are classic signs that the brain of your engine, the Electronic Control Module (ECM), may be failing. This vital component manages everything from fuel injection and ignition timing to emissions control. When it malfunctions, it can cause a cascade of problems that are often difficult to diagnose. This replacement ECM, part number 12630789, is the definitive solution to get your vehicle back on the road and running like new.
From the Diagnostic Bay
We had a 2011 Chevy Cruze come in with a random P0300 misfire code that just wouldn’t go away. The owner had already replaced the spark plugs, ignition coil pack, and even a fuel injector based on another shop’s advice. The misfire was intermittent and most noticeable under light load. After confirming fuel pressure and spark were good, we hooked up our scope to the injector control signals coming from the ECM. We found the signal for cylinder 2 was erratic. The problem wasn’t the injector; it was a failing driver inside the ECM. A new, properly programmed module like this one solved the issue instantly, saving the customer from throwing more parts at a phantom problem.
Is Your Aveo Engine Control Module Failing?
A faulty ECM doesn’t always fail completely. Often, it begins with subtle, intermittent symptoms that can be mistaken for other issues. Recognizing these signs early can save you time, money, and diagnostic headaches. Look out for these common indicators of a failing engine computer.
- ✔ Persistent and illuminated Check Engine Light (CEL)
- ✔ Engine stalling or shutting off unexpectedly while driving
- ✔ Noticeable decrease in fuel economy
- ✔ Rough or erratic engine idling
- ✔ Difficulty or inability to start the engine
- ✔ Hesitation or stumbling during acceleration
- ✔ Transmission shifting problems or harsh shifts
- ✔ Communication errors with diagnostic scan tools
Plug-and-Play Solution: Programmed to Your VIN
The biggest challenge when replacing a modern ECM is the complex programming required to make it communicate with your vehicle’s specific systems. We eliminate this expensive and time-consuming step for you. Before this module ships, our technicians will flash it with the latest GM-certified software updates, programming it specifically to your vehicle’s unique Vehicle Identification Number (VIN). This ensures that once you receive the part, it’s a direct-fit, plug-and-play installation. There is no need for a trip to the dealership for expensive programming. Simply provide your VIN after purchase, and we handle the rest.
This module is a direct replacement for a wide range of GM vehicles, ensuring broad compatibility. It interchanges with part numbers 12679199, 12642927, 12636386, and 12621466, fitting models such as the Chevrolet Cruze, Aveo, Spark, Trax, Sonic, and Pontiac G3/Wave. Please verify your part number and check the fitment list to ensure this is the correct part for your vehicle.
Frequently Asked Questions
What is VIN programming and why is it necessary?
VIN programming loads your vehicle’s specific software and security information onto the ECM. This allows the module to communicate correctly with the other computers in your car, such as the transmission controller and anti-theft system. Without it, the vehicle will not start or run properly.
Do I need to perform any other procedures after installation?
In most cases, this is a plug-and-play installation. However, some vehicles may require a simple security relearn procedure, which can typically be done without special tools and involves a sequence of key turns. Instructions can be easily found online for your specific model.
Where do I provide my VIN?
After you complete your purchase, you can send us a message with your 17-digit VIN. We cannot ship the module until we have this information to complete the programming.
How can I be sure this fits my vehicle?
The best way is to match the part number from your original ECM. This module replaces 12630789 and several other part numbers listed in the description. You can also check the compatibility list provided, which includes models like the Aveo, Cruze, Sonic, and Trax within specific year ranges.
What if my original part number is not listed but my vehicle is?
If your vehicle model and year are listed, this module is likely the correct one, as part numbers are often superseded. However, for guaranteed compatibility, please contact us with your VIN and original part number before ordering.